Reef Central Online Community
Live Aquaria

Home Forum Here you can view your subscribed threads, work with private messages and edit your profile and preferences View New Posts View Today's Posts

Find other members Frequently Asked Questions Search Reefkeeping online magazine for marine aquarists Support our sponsors and mention Reef Central

Go Back   Reef Central Online Community > General Interest Forums > The Reef Chemistry Forum
Register Blogs FAQ Calendar Mark Forums Read


User Tag List

Thread Tools
Old 12/25/2007, 08:27 PM   #1
Registered Member
Join Date: Apr 2007
Location: Cedar Rapids, Iowa
Posts: 169

I just got my refractometer from premiumaquatics, the instructions are a little vague by all means, what is the best way to calibrate this? Thanks Its the BLUE model

cyeater is offline   Reply With Quote
Old 12/25/2007, 09:58 PM   #2
Bri Guy
Registered Member
Bri Guy's Avatar
Join Date: Apr 2006
Location: Appleton, Wisconsin
Posts: 2,995
Many use distilled water and adjust to 0

But there have been many people saying theres is off by .003 when calibrating this way.

So the best way is to get some 53ms salinity monitor solution and calibrate to 1.0265 or 35

For my birthday i got a humidifier and a de-humidifier... I put them in the same room and let them fight it out.
(Steven Wright)

Current Tank Info: 40BR w/ 250w 14K Phoenix + 192w PC, 10g fuge w/ 55w PC, 10g sump, Eheim 1250 return w/ SCWD, ASM Mini G skimmer, Gravity fed ATO, Kalk doser, 1/10 HP chiller, 1 Vortec + 3MJs, all on an AC Jr. - Born on date 8-06 Pics in gallery! + 55g FOWLR w/ macro
Bri Guy is offline   Reply With Quote
Old 12/26/2007, 09:48 AM   #3
Registered Member
boxfishpooalot's Avatar
Join Date: Mar 2005
Location: canada, Grande Praire, Ab
Posts: 5,822
I wouldnt trust Pinpoints fluid. I would make my own as of Randys instructions. Take it to a pharmacist and they will measure it exactly.

I had bought a pinpoint calibration fluid, and it was enormously off! I do not trust chemicals for fish tanks anymore!

Its a good idea to have a refrence sample for alk test kits. 1.1350 grams of baking soda in 1gallon of distilled water=10dkh. Check your alkalinity test kit!
Algae is Mother Natures phosphate remover

Current Tank Info: 220 galon mixed reef.
boxfishpooalot is offline   Reply With Quote
Old 12/26/2007, 10:31 AM   #4
Bomb Technician (EOD)
Boomer's Avatar
Join Date: Aug 2002
Location: Duluth, Minnesota
Posts: 11,842
Box, the Pinpoint 53 mS fluid has been well tested by 100's of people and works the best. Even Randy recommends it as do I. If one is in doubt then take some table salt and RO/DI water to a pharmacist and have them make-up a 3.65 % solution. It is something I have often advised.

Randy's cal is a good idea but many are having big issues with it being off, as there is to much for error by the user, with teaspoons, coke bottles, etc. and what one "thinks" is correct.

If you See Me Running You Better Catch-Up

Seawater Chemistry, Geology, ID Marine Life, Collecting Science Books, Explosives Technology, Audiophile

An explosion can be defined as a loud noise, accompanied by the sudden going away of things, from a place where they use to be.
Boomer is offline   Reply With Quote

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump

All times are GMT -6. The time now is 09:21 AM.

TapaTalk Enabled

Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2021, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2021 Axivo Inc.
Use of this web site is subject to the terms and conditions described in the user agreement.
Reef CentralTM Reef Central, LLC. Copyright 1999-2014
User Alert System provided by Advanced User Tagging v3.3.0 (Pro) - vBulletin Mods & Addons Copyright © 2021 DragonByte Technologies Ltd.