Originally Posted by
Topgun63
I am running bioballs without the cartridge filter. Shouldn't the level be lower than 2 inches below the Max level so that the bioballs are "dry"??
That's why I asked what kind of filtration you were running. With the bioballs, you are always going to have problems with your water level. They, also, breed nitrates. I would highly suggest you replace them with either live rock rubble or do what I did. I used 2 jars of Seachem Matrix (which you never have to replace), 1 bag of Seachem Purigen (which when dirty you can recharge) and filter foam/floss. In the right chamber I float a bag of Seachem Carbon. I just added some extra filter floss on top of the middle grate for a little extra filtration. With all of this, you can run more water in your tank because the filtering is now more like a sump. Some people that use the live rock rubble, also put macro algae in with it and scratch off a little of the paint on the back and attach a little light for it to grow. I feel like I have enough live rock (30 lbs of Kaileni and Buna) so I combined a couple of other's suggestions and went with the filtering media above. Along with using Seachem's Reef Salt, I have really had great water parameters so I'm happy!