Matt’s IM 100 ext

Tamberav

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I honestly digital ones seems like adding complication to something simple. I can check the calibration of the refractometer before every use so quick.

Can you re-calibrate it? Then check it with a bottled 35 standard solution before each use?
 

mattzang

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there's just 'zeroing' it

here's what they replied to me in email

First step is to make sure that your unit is accurate, for absolute accuracy you need to be sure it is starting at true zero – ( zero for the MA887 is 1.000 SG )



First clean the base lens with Windex or other glass cleaners using a heavy Windex soaked Q-Tip – Then flush the Windex out of the pan by using the pipette we provide using “Steam Distilled Water” & do 2 or 3 loads of the pan and dump out or extract the distilled water using the pipette [ you MUST use “Steam Distilled Water” ] and then -- load the pan ½ way with “steam distilled water” ( you can’t use RO or DI water for this unit ) and press “zero” by doing this you are sure no residual salt or refraction material is on the lens– Another note: Your solution should always be a pan volume that is 1/3 to ½ full of distilled water for the zero and also that much of the sample. In addition, never double test the same sample – if you want to do a retest dump the first sample, flush the pan or blot out leftover first sample liquid and go back to the original source and get another sample. This is to prevent sedimentation of the sample that will give a distorted reading on the second reading.



To validate accuracy you should be using Seawater validation solution that is provided with your unit. @ ( 1.025 SG +/- 0.002) – Never use conductivity calibration solution. The reason is that Conductivity probes, like the Neptune and Pinpoint, are designed for NaCl testing and not Seawater. Most "validation" liquids for refractometers are made from Sodium Chloride [NaCl ] @ 99% - one of the providers of this on the internet is Sybon Scientific and there are others. The problem with their solution is that it is designed for Salinity validation not for Seawater. Their solution is Sodium Chloride [NaCl ] @ 99% and seawater is made up of Sodium Chloride [ NaCl ] @ 97% and Potassium Chloride [ KCl ] @ 2% and Other Trace Minerals Salts @ 1% and that 3% makes a huge difference.



Using this popular salinity liquid sellers, Sybon's, own chart http://www.premiumaquatics.com/prodimages/tropiceden/Sybon_refracto_cal_solution.jpg

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you will see that their solution is rated at 35ppt of Sodium Chloride and has a SG of 1.0264 SG and 53 mS/cm @ 77F which is their target for their salinity measurement units but that is for "Salinity Meters, Testers & Refractometers" not Seawater and their primary target is PPT/PSU or mS/cm. However, the optimum target for a seawater aquarium is 1.0250 sg @ between 68° F to 72° F (20/20). -- this brings up a point that all of this should be done at 70 F not 77 F.




The only way to validate your unit is with an independent actual seawater validation solution kit however if you are at +/- 0.001 SG you are within the units’ accuracy specification. – If you do not have a validation kit we will be glad to send a kit to you at no charge.



Thank you and best regards,



Milwaukee Instruments customer support
 

mattzang

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Pet smart ftw

petco was closed so thought I’d try pet smart and sure enough a tank full of black mollies

plus I got an orange lyretail or something? It was cool looking lol and only .50 more

Into a 1.016 tank they go so hopefully they do ok
 

mattzang

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Nice decor!
hahah, i went on petco.com one day and decided to pretty up my QT tanks and suffice to say you definitely want to find the size of some of those things. i have this little castle looking thing that might house a cleaner goby or something, not much bigger.

hey would you recommend the DC version of the 9410? worth the extra $70 or so?
 

mattzang

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i'm apparently a freshwater savant as there are a bunch of baby black mollies in the tank today. and nobody died overnight! gonna wait a few days before trying to raise the salinity on them
 

mattzang

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Tunze 9410 dc skimmer put together, minus the airline clamp they casually forgot to include. Apparently it’s not necessary so gonna roll without it. It being dc should be easy to dial in. Went with Snapcrate that 🥔 advised 😃 as my sump is 8.5” and I never got around to getting the sump water gate
 

mattzang

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on the whining front, the last couple weeks i've bought and received:

-santa monica rain 2 algae scrubber
-2nd reefi duo extreme
-tunze 9410 skimmer

the algae scrubber's tray arrived broken. not badly, i could've just glued it, but sucks. santa monica guy was responsive and emailed quickly and is sending me a new tray.

the reefi glass plate just casually fell off when i picked it up. apparently it's held on by 4 magnets and 2 of them on that light were really weak. the reefi dude is active on r2r so i messaged him and he was on it quick, new glass plate en route as i type

the tunze arrived and did not have the included air hose clamp that it claims it includes. like i said, apparently not overly necessary, but dang. when i ordered the 3155 ATO the controller board was completely missing too, also rectified quickly via mail.

nothing world shattering and customer service has been great, but the aquarium world needs to unscrew themselves :poop:

me at the next RAP walking down the sponsor row

 

Potoooooooo

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Tunze 9410 dc skimmer put together, minus the airline clamp they casually forgot to include. Apparently it’s not necessary so gonna roll without it. It being dc should be easy to dial in. Went with Snapcrate that 🥔 advised 😃 as my sump is 8.5” and I never got around to getting the sump water gate
Ooh, I didn't know there was a 🥔 icon! I recall rvitko posting that the DC doesn't come with or need the airline clamp due to the adjustable pump, mine didn't either.
 

mattzang

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Ooh, I didn't know there was a 🥔 icon! I recall rvitko posting that the DC doesn't come with or need the airline clamp due to the adjustable pump, mine didn't either.
ah, makes sense. They totally say it’s included in the instructions, but that’s probably just printed once for both 9410s
 

mattzang

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dang 9410 putting in work overnight, already filled the cup (but not overfilled!). it's a bit wetter than i'm aiming for, but i'm sure my tank is straight up filthy. i LOVE this thing compared to my aquamaxx ones. those things never worked this quickly or this well
 

mattzang

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Potters angel suddenly acting a little iffy on eating and hiding a bit today. While I watched she scratched a couple times so dosed gc and will redo a second dose next Saturday.

hopefully it’s a worm issue and not something else.. probably need to feed gc focus food too
 
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