Help me pick UV unit/pump and figure out the plumbing.

clsanchez77

20 Year Noob
Location
Metairie, LA
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I was googling around about the Neptune flow sensors and found some of your posts btw
I don't recommend them as they are garbage and Neptune does not stand behind its products like it used to. They require a lot of service, impart significant head loss to the system and are also incredibly inaccurate unless you can provide long runs of straight pipe. I wish I could find better ones, but the good quality ones use metal parts and that is a part of the problem. The only reliable plastic ones I can find are limited to 1/4" and 1/2" pipe....and then you cannot use them on the Apex system.
 

phatduckk

Well-known member
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SF Bay Area
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Ok so I’m gonna get a pump with a ton of head room, a uv and a bunch of plumbing to make stuff easier.

last question:
I have about 75g of water. Should I get a UV rated for my size or is there merit to the over sizing? The Aqua UV 15w unit matches my gallons and The gph recommendation matches my tanks recommended return flow.

the 25w is only 50$ more but asks for way more gph. I’m planning on upgrading my return pump so I’m not worried about being able to push the volume just trying to split the forum myths from actual recommendations.
 

clsanchez77

20 Year Noob
Location
Metairie, LA
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Ok so I’m gonna get a pump with a ton of head room,
2,000 pounds of head pressure is probably too much ;)

I have about 75g of water. Should I get a UV rated for my size or is there merit to the over sizing? The Aqua UV 15w unit matches my gallons and The gph recommendation matches my tanks recommended return flow.

the 25w is only 50$ more but asks for way more gph. I’m planning on upgrading my return pump so I’m not worried about being able to push the volume just trying to split the forum myths from actual recommendations.
No wrong answer here. If the $50 is better spend on a better quality pump, then spend it there instead. The extra wattage could help you mitigate something more potent in the tank down the line and maintain higher flowrates...or could make to a slightly larger tank should you upgrade. No, oversizing UV does not have any drawbacks.
 

Badilac

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2,000 pounds of head pressure is probably too much ;)



No wrong answer here. If the $50 is better spend on a better quality pump, then spend it there instead. The extra wattage could help you mitigate something more potent in the tank down the line and maintain higher flowrates...or could make to a slightly larger tank should you upgrade. No, oversizing UV does not have any drawbacks.
Other than slightly more heat. But sound advise above.
 

phatduckk

Well-known member
Location
SF Bay Area
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ok @clsanchez77 and @Badilac you guys rule.

plan:
  • get a Neptune Cor 20 pump (Cor 15 would require running at ~100% giving me no margin for error. Varios 6 or 8 also options but higher priced)
  • Aqua UV 25w (gonna look into the lifegaurd and pentair units too)
  • a bunch of plumbing supplies
  • Neptune flow sensor at the end (tank recommends 800gph which is < UV max flow)
  • leak detectors
 

Badilac

Well-known member
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ok @clsanchez77 and @Badilac you guys rule.

plan:
  • get a Neptune Cor 20 pump (Cor 15 would require running at ~100% giving me no margin for error. Varios 6 or 8 also options but higher priced)
  • Aqua UV 25w (gonna look into the lifegaurd and pentair units too)
  • a bunch of plumbing supplies
  • Neptune flow sensor at the end (tank recommends 800gph which is < UV max flow)
  • leak detectors

Only thing I would remove is the flow sensor, As they are crap. You could just put it in line for a check of GPH then remove it since they suck and they limit the true flow. Also you would have to go with their 1" version.
 

phatduckk

Well-known member
Location
SF Bay Area
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Only thing I would remove is the flow sensor, As they are crap. You could just put it in line for a check of GPH then remove it since they suck and they limit the true flow. Also you would have to go with their 1" version.
Are they really that terrible? I could just run it into a bucket with a stopwatch but that way less sexy...

my tank's return is 5/8. that still make the 1" sensor a waste?
 

clsanchez77

20 Year Noob
Location
Metairie, LA
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They are throw away, and that is the problem. Neptune does not disclose that. In industry, you do not see hall effect flow meters for good reason. Now, I will say the 1/4" ones are great and the 1/2" one are probably good in freshwater. I plan to trick my RO system with some 1/4" to monitor raw water and waste water (permeate is too slow for the meter, so you have to do the math).

In saltwater, you have to use more reliable meters and now you are taking $500 or so.

If you really want the flow meters, instead of the Neptune ones, go to Amazon and get the $10 ones. Then when they stop working, you can just replace them. But then these will not be compatible with the Apex system unless you can figure out the wiring. Another reason I stopped liking Neptune - they bulk purchase $10 cheap flow meters, put a sticker on it, charge $50 and tell you how they invented it....and then fail to support it when it does not work. Interestly the warranty period is just short of the failure rate on the meters. Go check out their forum and see for yourself. I am done with Neptune.
 

phatduckk

Well-known member
Location
SF Bay Area
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But then these will not be compatible with the Apex system unless you can figure out the wiring.
huh.... this one supports almost 950gph. isn't this as simple as figuring out how their 3.5mm jack works & wiring the two up? or just solder on a quick connect for easy swap when the $10 unit breaks?

perhaps I'm underestimating something...
 

clsanchez77

20 Year Noob
Location
Metairie, LA
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I'm not on their Koolaid but I do like the Apex. I have a VarioS pump and since it can be controlled by the Apex it works for me. Last thing I want to do is open 3 different apps or press 4 buttons to do something to my fish tank.
I outright refuse any device that requires an app or a wifi connection.

huh.... this one supports almost 950gph. isn't this as simple as figuring out how their 3.5mm jack works & wiring the two up? or just solder on a quick connect for easy swap when the $10 unit breaks?

perhaps I'm underestimating something...
I do think it is that simple. I dont have one of their flow monitors so I cant peel back the cable sleeve and see if the wires are color coordinated. If so, they *should* follow the same wiring logic as a 3-wire or 4-wire DC fan.

The other issue you will have is if the K value, or pulses per revolution will be the same, otherwise you will get incorrect flowrates.

I'm not on their Koolaid but I do like the Apex. I have a VarioS pump and since it can be controlled by the Apex it works for me.
This is going to cost more, but I am looking into a cheap PLC with touchscreen interface, all fully programmable and compatible will all standard accessories without the stupid module boxes, wiring connectors and other BS. My trigger point on this was when I decided to automate my RODI system and I saw all the stupid parts and pieces I would need to interface with the neptune. That and some other things I wanted to do and cannot because of their imposed limitations.
 

phatduckk

Well-known member
Location
SF Bay Area
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My needs haven't been high enough to run into anything that pissed me off yet. I just wanna be able to open one app to do all the things. so far ive gotten stuff I want/like hooked up to their world with the exception of my lights... those just got programmed once via Red Sea's crappy app and I pretty much never fiddle with it
 

phatduckk

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Location
SF Bay Area
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but I am annoyed with the EchoTech vs Neptune thing w/ the WXM being discontinued. I like being able to make the MP40's do different things during/after I trigger feed mode.

Kinda feels like when apple and google started getting into "fights". The kids always suffer when mom & dad aren't getting along
 

phatduckk

Well-known member
Location
SF Bay Area
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OK - I figured I'd stop trying to be fancy and just get the job done. So I went with the simplest thing that will do the job.
  • bought the 15w Aqua UV. it fits in my cabinet, is rated for my tank size & the max flow it wants matches the max my tank's return wants.
  • Gonna mount it on the underside of my stand. run straight from the return pump to the UV then to the return
my current return pump should be "good enough" for now. I shouldn't be adding much more head but I'm currently running at 65% so I can crank it up all the way if need be. Even then - if its not pushing enough it'll be a simple swap w/o the need for any major plumbing.
 

clsanchez77

20 Year Noob
Location
Metairie, LA
Country flag
but I am annoyed with the EchoTech vs Neptune thing w/ the WXM being discontinued. I like being able to make the MP40's do different things during/after I trigger feed mode.

Kinda feels like when apple and google started getting into "fights". The kids always suffer when mom & dad aren't getting along
If your Vortechs are compatible, I have a WXM module I will be willing to sell to you later this summer. Once I break the tank down and rebuild it, I will not need the WXM anymore.

Where is this coming from? When did Neptune not support their products?
Just go look at the community forum. If the product is under warranty, yes you can call them, request the support ticket, wait for the call back, be home during business hours with the screen share software on your laptop and eventually they will replace a warrantied product. Otherwise SOL. I can't just take off work and wait on them every time something does not work. The community is less than helpful on product issues.

My needs haven't been high enough to run into anything that pissed me off yet. I just wanna be able to open one app to do all the things. so far ive gotten stuff I want/like hooked up to their world with the exception of my lights... those just got programmed once via Red Sea's crappy app and I pretty much never fiddle with it
Yea, same here. Im working on a new system that will reconsolidate everything on one app, but its not hobby equipment. Curious to see how it comes out.

OK - I figured I'd stop trying to be fancy and just get the job done. So I went with the simplest thing that will do the job.
  • bought the 15w Aqua UV. it fits in my cabinet, is rated for my tank size & the max flow it wants matches the max my tank's return wants.
  • Gonna mount it on the underside of my stand. run straight from the return pump to the UV then to the return
my current return pump should be "good enough" for now. I shouldn't be adding much more head but I'm currently running at 65% so I can crank it up all the way if need be. Even then - if its not pushing enough it'll be a simple swap w/o the need for any major plumbing.
Sounds good, I suspect you will be fine. There is a few ways you can estimate your flow. By chance, do you have loc-lines on your return? If so, I know a really easy trick to figure out the flow rate. If not, there is always the bucket test.
 

phatduckk

Well-known member
Location
SF Bay Area
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By chance, do you have loc-lines on your return? If so, I know a really easy trick to figure out the flow rate. If not, there is always the bucket test.
Yup! The tank actually just has one return so I have a splitter thing that splits the single out into 2 3/4” loc lines.
 

phatduckk

Well-known member
Location
SF Bay Area
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If your Vortechs are compatible, I have a WXM module I will be willing to sell to you later this summer. Once I break the tank down and rebuild it, I will not need the WXM anymore.
I already have 2;)

I’m a gear whore. Don’t even want to know how many guitar/bass related pieces of equipment I own.
 

clsanchez77

20 Year Noob
Location
Metairie, LA
Country flag
Yup! The tank actually just has one return so I have a splitter thing that splits the single out into 2 3/4” loc lines.
This is going to sound really stupid, and it is, but if you raise the loc-line above the water line and set it straight, perfectly straight. Then measure the height above the water and the distance the water travels, you can determine the velocity of the water. Then if you know the area opening of the loc-line, we can get the flowrate.
 

phatduckk

Well-known member
Location
SF Bay Area
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This is going to sound really stupid, and it is, but if you raise the loc-line above the water line and set it straight, perfectly straight. Then measure the height above the water and the distance the water travels, you can determine the velocity of the water. Then if you know the area opening of the loc-line, we can get the flowrate.
na that's not dumb at all. I might have to actually buy an adapter as I go from tank's return -> splitting adapter -> 2x 3/4" Loc line. I don't know if the math would hold w/ a split line. assuming there's constant flow through both sides then, I guess so, but I'd suspect constant variance. Maybe just measure 10 times per side and average for a ballpark? Measuring the height and distance isn't exact so throwing another imprecision into the equation seems like it could get quite far off easily
 
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