View Full Version : alkalinity consumption

03-09-2017, 10:25 PM
So i have about 70 gal of water in my aquarium. I started getting my ca/alk/mag in check and have been dosing daily. My tank is currently empty due to Ich and I am about 2 weeks away from the 2 month period where I can add fish. I have some misbars about to go in and an anemone I need to pick up from joe. Ive been dosing 2 part and my calcium dosage is minimal. I can go 3 or 4 days and not see much of a swing in calcium, but daily i am seeing a full point swing in alkalinity.. IM adding 75ml+ a day of alkaliity and I still cant get my alk at 10dkh for more than a few hours. I dosed last night to get it to 10, this morning, i added 75ml, came home, tested again about the same time as the night before and its 9.2. Its really hard for me to believe a tank with live rock and aragonite no coral 5 sails and crabs only is consuming this much alkalinity daily. My calcimum and magnesium are 440 and 1200ish and they dont move much and realy dont require much. Based on where it was today i need to start dosing over 100ml of alk daily to maintain an empty tank? Could something else be causing this? Oh yea.. i am using a brand new electronic marine alk test from hanna

03-10-2017, 01:40 AM
Why are you stuck at keeping your tanks alk at 10?

03-10-2017, 01:41 AM
Randy holmes Farley suggested tank perams

03-10-2017, 06:55 AM
I have 3 happy tanks and my alkalinity stays around 8. Everyone always told me not to chase numbers...good advice

03-10-2017, 07:29 AM
The number isnt the issue here people... The fact i am using 100ml a day of alk in an empty tank is what is concerning me... i dont remember ever having to add this much daily to maintain a number.. It doesent matter if I want it set at 8 9 or 10.. it looses a full point in 1 day and like I said, the tank is empty. what is consuming the alk?

03-10-2017, 07:42 AM
I would try not dosing for a couple days and see if it levels out, and at what number.

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03-10-2017, 08:10 AM
You are probably precipitating it out as the pH rises in your tank. Get your mag up to 1300-1350 if you are keeping Cal and alk elevated. Mag is key to stopping precipitation.

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static reef
03-10-2017, 08:21 AM
Plus 1 to what kirby said. Try another brand of alk test kit as well.

03-10-2017, 09:31 AM
I have been using the Hanna test kit. I have a calibration test for it. I can give you some of it to test your kit. See if your sand is beginning to clump up or solidify. That could be where the precipitate is going.

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03-10-2017, 02:45 PM
I just checked the aragonite a couple days ago and im not noticing any clumping. I will be replacing my cal and mg tests this weekend so Ill make sure mg is where it is supposed to be before trying to get the ALK back in line.

03-11-2017, 09:53 AM
Try not dosing anything including cal for a day or two to see what goes down.

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