04-26-2009, 10:22 AM
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Originally Posted by Sageo3000
****, when I changed some of the water i siphoned some of the gravel to get the junk out. hope i didn't suck up all the bacteria. Shouldn't it be in the filter though?
Did you read the posts in the link I gave previously? I explained the nitrogen cycle, and mentioned that bacteria colonize everything in a tank--on plant leaves, rocks and wood, on and in the gravel/sand, in the filter media, even on the tank walls. Normally vacuuming the gravel is OK as there is enough bacteria elsewhere, but one should never clean the filter at the same time because it is possible to remove too much of it. But in a new tank which is still cycling, you don't want to remove any for 8 weeks, so don't vacuum the gravel and don't clean the filter. Having done so isn't going to bring everything crashing down, but the aim is to get the bacteria established sooner rather than delaying it further.