I just setup my 2x3level OHF. find it quite heavy with 4KG of Sphere in the middle section. My bottom still got some space. Wish to add Matrix duno if will b too heavy for a 3 FT tank.
Btw, i notice most water drip dun touch the border of the box, end up border media is dry, no water contact. Norm? I think of rearrange, use CR to b the border so the nano sphere can concentrate on the center part where water will drip.
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