dickia Posted June 22, 2004 Share Posted June 22, 2004 Hi all, I have a 3x2x2 tank with 2.5x2x2 sump, been running now for nearly two months. I am also using the above Korallin unit and cannot get the adjust ment correct as I have a very high DKh (18.0) with a PH currently at 8.1. The instructions from Korallin are of little use. There are two adjustments on the Korallin unit. 1. Water flow control and 2. CO2 bubble control. is any SRC member familiar with the Korallin and able to advise me that to decrease the DKh and increase the PH, should I reduce or increase the CO2? I was told by a friend I should reduce the CO2 (currently 10 bubbles per minute) and increase the flow (Currently at max). But it takes days to take effect and after a week I am seeing little or no change. I have already changed more of the water than I should have in an effort to reduce the DKh which worked for a couple of days but its going up again and the PH going down. I am a reletive newcomer to reefkeeping and any help would be appreciated. Take care, Tony. Quote Link to comment Share on other sites More sharing options...
SRC Member Maxima Posted June 22, 2004 SRC Member Share Posted June 22, 2004 Hi all, I have a 3x2x2 tank with 2.5x2x2 sump, been running now for nearly two months. I am also using the above Korallin unit and cannot get the adjust ment correct as I have a very high DKh (18.0) with a PH currently at 8.1. The instructions from Korallin are of little use.There are two adjustments on the Korallin unit. 1. Water flow control and 2. CO2 bubble control. is any SRC member familiar with the Korallin and able to advise me that to decrease the DKh and increase the PH, should I reduce or increase the CO2? I was told by a friend I should reduce the CO2 (currently 10 bubbles per minute) and increase the flow (Currently at max). But it takes days to take effect and after a week I am seeing little or no change. I have already changed more of the water than I should have in an effort to reduce the DKh which worked for a couple of days but its going up again and the PH going down. I am a reletive newcomer to reefkeeping and any help would be appreciated. Take care, Tony. Shut down your CO2 for 2~4 days and your dkh, depends on LS in yr tank....will drop 1~3dkh per day. Measure on 2nd day, thirth & fourth day yr tank dkh & calcium. U are all set to restart when dkh is around 8 ~ 10 dkh. I don;t recommend anything more than 11dkh. Dkh Drops depends on CO2 in yr room & tank(type of LS & density). Restart reactor and make sure of the following: 1. start with 30 drops pf CO2 per minute or less 2. effluent should be 2 drops per mintue or less 3. chk yr calcium, i will not be surprise it is less than 360ppm. At 18dkh, it will cause ionic inbalance. 4. chk yr test kit for dkh & calcium is of reputable brands. Most brands out there is a piece of joke. Purchase on reputable brands that is proven to be effective, Don't be penny wise pound foolish. Maxima e.Aquanature LFS Website Quote Link to comment Share on other sites More sharing options...
dickia Posted June 22, 2004 Author Share Posted June 22, 2004 Maxima thanks very much I will try that, you are quite correct the Ca level is 220 and despite adding additional Calcium+3, it remains low. Thanks to for the information regarding test kits, for DKh have three kits now, always liked Siefert but their Dkh tester only goes up to 16 and mine is way off the scale. Will shut off. I'll let u know how I get on. Tks again Tony.. Quote Link to comment Share on other sites More sharing options...
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