Two part or Kalk

[Stemick]

Water changes was keeping up with parameters when I left in November my brother inlaw is taking care of tank till I get back this spring I have about ten 3" to 4" frags of SPS, two frags of two headed frogspawn, small six headed acan frag. I have a feeling I'm going to need to start dosing when I get back to keep up with the Cal. and Alk. uptake if not already needing it now. So trying to start planning now so I can get equipment and stuff ahead of time. For a tank with 52g display and 20g sump total water volume of 60ish gal what would the best route be to dose two part or kalkwasser/limewater. I have a tunze ATO and a Apex controller and my PH is 7.7 to 8.1 ish daily swing my PH raising with Kalk might be a benefit and I could control it with the apex. Would I be able to dose low enough with a kalk reactor tied into my ATO? Or would a two part be better with a automatic doser for a smaller dose. What would be the smallest daily depletion have to be to properly use Kalk stir reactor tied into ATO?


:usa2: STEMICK :usa2:

 

[Randy Holmes-Farley Verified Community Expert]

Both will work perfectly fine. The two part has the potential to grow more as the tank grows, but putting a little calcium hydroxide in the ATO now is likely pretty easy and cost effective. It is all I use, but I do not have much in the way of SPS.

Depending on evaporation, limewater can add a few dKH per day. Adding 1.25% of the tank volume in saturated limewater adds about 1.4 dKH.