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#9
09-16-2002, 11:36 AM
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Calcium problems.
Quote:
If you just increase just your co2, this will tend to increase your alk only,and with an increase in alk comes a drop in Ca++,or atleast Ca++ will remain the same in the effluent. If both are increased perportionatly,the increase in co2 seems to be counteracted by an equal increase in effluent rate. I dont really understand the chemical reactions happening,but i know this to be true through the use of my reactors. Your alk may slightly increase initially,but will level out....once you are close to the desired alk,then leave co2 alone and increase effluent only. Like wise,if your effluent only is increased or high in comparison to your c02 rate your effluent would be higher in Ca++. But if this is all thats done,you will end up with a higher Ca and a dropping alk,and if your alk is at the desired level now...it really isnt achieving the results you wish. Im also pretty sure you have a low Mg level due to this reason aswell,the media in your reactor contains all the elements needed and should be very close to NSW when dissolved.kinda like a multivitamin ;) This is why i had suggested waiting until your reactor was dialed in completely before additions of chemicals...dont panic,it usually takes alot longer than 2 weeks to get it finally reading what it should. Keep in mind it is difficlult and unlikely wether you ever achieve Ca++ as NSW,while your alk sits as high as we usually like it to...3.5 and up. But when your crunching #`s that close and you still have problems say,with sps growth,i would guess they have nothing to do with your reactor. Hth, [ 17 September 2002, 21:28: Message edited by: Superfudge ] 
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