What I have in mind is an open top aquarium, in 19 mm starphire glas (front, left and right), absolutely NO bracing in the aquarium (yes, the real DUPLA style
) with two overflow boxes in the corners. I am going to see if its possible to have the glas thermo-hardened, after drilling of course. Should be possible, although costly i think
Dimensions should be 210 cm x 95 x 65 (maybe 70)
The filter will no doubt be a wet/dry.
But i think it will not be easy to achieve enough circulation within the tank, i plan on a heavily planted tank, dutch style. I am almost certain that only the two return lines from the trickle filter will not be enough. (on my 400 liter i would have liked also two return lines, should have insisted when i ordered it...)
Using powerheads is an option, but i do not like too much hardware that is visible, and its not easy to hide those pumps.
I have been reading much lately on the reefcentral forum, there are fantastic examples of 250 to 400 gallon aquaria, with hardly no powerheads visible. They achieve this by drilling the bottom in left front and right corners for two return lines extra on the bottom, or multiple drillings (4 to 8) for closed loop systems with external pumps dedicated to only this task.
The needed flow rates in a reef aquarium are of course by far superior to the needed flow on a planted tank. But still, i would like to ask your opinion, or maybe even practical knowledge just which of these techniques could be applied to a large planted tank.
A not to strong, but steady flow in every part of the aquarium is the goal.