Hey Leon , thank you for the detailed write up , i was aiming for 40ml per min but that wasnt possible with my set up as it eventually came to a stop in the matter of days . The pH that i have set is about 6.7(try to go as high as possoble to decrease alk output as my tank requirements is not that high) The lowest it will hit is 6.5 , but generally stays at 6.7-6.8.
The maxijet is used to feed only the calcium reactor , but i modified it such that water flows out of another opening as well , rationale is to not let the pump overheat.
Im currently using a pinch valve that came along with the reactor
The dilemma im having right now is that my tank's alkalinity demand is not very high since most of my corals are still frags or mini colonies. A cr is needed as kalk alone isnt able to keep up. Thus im trying to dial back my reactor by :
1) cutting my media to just 1/3 of the reactor capacity
2) raising the chamber's pH to 6.7-6.8(i found that 6.8 is still able the melt the media im using which is crushed corals)
3) cutting down on the effluent output (but im giving up on this. It seems to be impossible since low drip rate means clogging and hence unstable addition of alkalinity into the tank)
I am now trying to include a timer into my setup after recieving advises from fellow reefers and resding articles online , however there seems to be another problem. Where should the timer be placed? The solenoid or the feed pump?
If the timer was placed at the solenoid , theres a few issues thst i can foresee (please check my logic on this):
1) It takes a few hours for pH to rise above 6.8 when the solenoid is switched off , thus alkalinity will continue to be pumped into the tank after switch is offed , and it wjll alsl take another few hours before for pH to drop back to 6.7-6.8 when solenoid is switched on
If the timer was placed at the feed pump :
1) the chamber remains at 6.7-6.8 thus cr continues to melt and when the timer switches the pump on , alot of dkh will be dumped to the tank in a short span of time . (On the other hand i was thinking there must be a saturation point for the ca co3 ions and therefore once a certain level conc is achieved in the chamber , the media would stop melting, unsure about this theory though)
2) there could be an accumilation of CO2 bubbles (tried it out yesterday and it did indeed happen)
3) bacteria build up? Im not sure
Anyways for now , i am putting my solenoid on a timer for 7h , assuming first 3h is to bring the pH down to below 6.8 , i would be left with 4h to melt the media , and assuming it takes about an hour to rise above 6.8 , i would have a total of about 5h run time for the CR.
What are your thoughts? Im keen to find out how you guys would run your calcium reactors