Thread: Dry rock cycle
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Old 03-16-2018, 02:50 AM
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G.Alexander G.Alexander ثeu
Join Date: Jan 2005
Posts: 35,477

Just replace 50% of the material for the first time, later exchanges are 90%. After each exchange dose ZeoBac daily for 10 days, than 2 x weekly as usual. Next exchange will be in 4 additional weeks, further exchanges can be lengthen to 6 8 weeks depending to the nutrient concentrations. Some kind of nutrient up / down for such a fresh system is normal, no worry.

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