I'm super-new to planted tanks, and I've begun to set up a 33g. I've got 30lbs of flourite (red) in there now (which I rinsed well). It's been 4 days, and I've rinsed out the filter media everyday. The sludge finally settled last night, and today I syphoned off about 10g of water, sucking lots of silt up from the bottom. After, I stirred up the flourite some more to let the filter grab some silt. What I'm wondering is...if I put a layer of regular gravel or sand on top, will the silt stay under that until I vacuum the bottom, or will it leach through to cloud my tank? (I know the two substrates will mix, and I'm not too worried about that) I'm hoping that eventually the fine silt that's clouding the water will be gone from the tank...I'm dreading the possibility that it will always be there to cloud my tank after water changes. It's just not a pretty sight. Am I doing something wrong, or not doing something I should be?