Thread: 100g SPS Tank
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Old 11-02-2018, 03:59 AM
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G.Alexander G.Alexander ثeu
Join Date: Jan 2005
Posts: 35,477

Thank you for the additional Information and pictures. I can not see anything problematic but as the system is still young (started in September) and as you had a high PO4 level since the start I would expect the rocks you have used does leach PO4. There is not a quick fix, it will take time until the level starts to drop slowly. If you replace the Zeovit material wait another week and if your corals are doing fine I would recommend to switch the reactor to continuous flow. You can do this in two steps if you like to.

Please also put some of the carbon in some RO water and let it soak in for one day. Than check the PO4 level of the water to see if the carbon does leach PO4.

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