Fishless cycling with mature media. Ammonia is processing nicely, but nitrites now above 1.5 - I've just topped up the ammonia so expecting the nitrites to go higher before they drop. I've heard that high levels of ammonia can inhibit the bacteria, but not had that problem - so what about nitrites - how high should I let that go before doing a water change?
Thanks for any advice!
Thanks for any advice!