i've had my twenty gallon aquarium for about two months.
it has already cycled.
but recently it has gotten cloudy.
i do not over feed at all.
i leave the light on from about 10 am to about 9 or 10 pm.
when i clean the tank should i vacuum down in the gravel or just the top of it?
i dont want to suck out the benifical bacteria?
and i also clean my tank once a week now.
i take out 4 gallons.
i have three fish, a red male swordtail, a molly, a hatchet fish, and two ghost shrimp, and a rubber lip plecco (he's small)
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