[Ltspd]

I have just set up my "MyReef" reactor and I am in the process of dialing it in. I am using a Dweyr flowmeter with the co2 running around 20 cc/min. The effluant ph is around 6.8 with the tank ph ranging from 7.9 to 8.1 (night/day) My Calc level is only 350ppm but I will raise this weekend after I do a w/c. My alk in the sump (away from effluant) is greater than 16 dkh. I know the following:

Increasing CO2 feed will cause effluent pH to drop, and raise effluent alkalinity.
Decreasing CO2 feed will cause effluent pH to rise, and lower effluent alkalinity.

Increasing effluent flow rate will cause the effluent pH to rise, and lower effluent alkalinity.
Decreasing your effluent flow rate will cause the effluent pH to drop, and raise effluent alkalinity.

Get tank alkalinity set to your target level, and your calcium level will fall into place.

Question 1 is the last statement. What should my Alk level be?

Question 2, on a average what are your effluant output ph and your flow?


ps, I give the Myreef reactor a double thumbs up!

[golfish]

Hey Paul,

1- it depends

2- I'm doing about 50ml per minute at a PH of 6.65. I try to keep the KH on the effluent 3x what I want the tank to be. The last I checked (a week ago) my tanks KH was 13

Don't think too much about PH. Try to get your effluent KH 3x what you want in the tank....everything else should fall into place.

Mark