Originally Posted by waicool
Is there a problem using live plantings with undergravel filter?
Well, it's just that you have to be very through about vaccuming when you're using an undergravel filter, and some plants don't like having thier roots disturbed. Other plants may put out too many roots and clog up the filter. If you can reverse the flow so the water comes up through the UGF
and has a diffrent intake, then the external filter will do the particle filtering, and you'll still have the biological filtering benifits of the UGF
. (This is sometimes refered to as a RUGF, it is debated wether they are good for plants or not. Some people really like them.)
Bioballs are fairly low maintenance, they're just filter media with lots of surface area. Some are plastic, and some are ceramic. You just put them in the filter after the mechanical filtering stage, and every month or so rinse off 1/3 of the balls. (Don't want to clean them all at once, you can rinse off the bacteria as well as acumulated debris.)