Alk Dosing

ajoe · 02/28/2017, 06:52 PM

Evening all. Just started dosing 2 part BRS Alk last week and have gotten it up from 108 ppm to 138 ppm slowly and efficiently but seems to stall out there. Reef calculator calls for 21 ml but after adding and re-measuring an hour later unchanged. I am wandering if my RODI top off of 1 - 1.5 gallons p/d is diluting it and if so what would be a safe dosage to get it to 150ish. Trying not to raise it more than 25 ppm p/d but seems like a revolving door. I know it takes a while to dial in but seems like it is loosing the amount of ALK p/d that is required to reach my goal of 150.

50 gallons of joy.

bertoni · 02/28/2017, 07:07 PM

10 ppm is a small change. That might be close to the noise level in the test kits. Also, many tanks will consume 50-60 ppm per day, so I might try measuring more like a minute or two after dosing.

02/28/2017, 06:52 PM	#1
ajoe Registered Member Join Date: Aug 2016 Posts: 297	Alk Dosing Evening all. Just started dosing 2 part BRS Alk last week and have gotten it up from 108 ppm to 138 ppm slowly and efficiently but seems to stall out there. Reef calculator calls for 21 ml but after adding and re-measuring an hour later unchanged. I am wandering if my RODI top off of 1 - 1.5 gallons p/d is diluting it and if so what would be a safe dosage to get it to 150ish. Trying not to raise it more than 25 ppm p/d but seems like a revolving door. I know it takes a while to dial in but seems like it is loosing the amount of ALK p/d that is required to reach my goal of 150. 50 gallons of joy.

02/28/2017, 07:07 PM	#2
bertoni RC Mod Join Date: Mar 2002 Location: Mountain View, CA, USA Posts: 88,616	10 ppm is a small change. That might be close to the noise level in the test kits. Also, many tanks will consume 50-60 ppm per day, so I might try measuring more like a minute or two after dosing. __________________ Jonathan Bertoni