| Re: Stacking tanks Most all glass tanks are supposed to be perimeter supported otherwise you risk cracking and failure. I would think that a 20 gallon tank (water alone weighing approx 160 lbs) would put too much pressure on the bottom tank.
Not sure I would chance it.
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Dave
240 Gallon Tall Tencor (96"L x 30"T x 18"W)
4 250 Watt MH XM10K bulbs
2-54 Watt T5 Actinic
Euro-Reef CS8-2-RC
Jetstream 1 Calcium Reactor
4 Tunze Turbelle stream 6000 power heads
7095 Tunze controller
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