As far as the pump and plumbing sizes to use, that will depend on if you are going to use a OM or not. If you do, I think you have to use a pressure rated pump because when the drum rotates, it actually stops flow during the cutover process.
I would think something like either Ehiem 1250 or Quiet One 1200 would work pretty well with 1.25" plumbing. Both would yield about 300 GPH. Would you want more than that?
<a href=showthread.php?s=&postid=9249581#post9249581 target=_blank>Originally posted</a> by ppurcell I would think something like either Ehiem 1250 or Quiet One 1200 would work pretty well with 1.25" plumbing. Both would yield about 300 GPH. Would you want more than that?
If you are determined to drill the tank with water in it then I would probably take a piece of acrylic and drill the size hole you need in it as a guide and then take another solid piece of acrylic (for the inside of the tank to trap the shavings) and clamp both to the tank with the glass in middle.
Drill the glass, vacuum out the hole as best you can to remove the glass shavings, then remove the form and repeat for the other holes.
Sounds like a lot of risk for my taste though...So I think I would be prepared with a wet-vac and another tank just in case.
As far as pumps go, I have QO1200 and the Eheim1250, both are very quiet. I can't offer any opinions about the Pan World. Small Mag pumps may or may not be ok for external use. I've had mixed results with them leaking.
well, phil, now you got me thinking. the risks really do outweigh the work of aquascaping my tank. maybe i should just buy a new tank and do it the right way.... paint the back, drill it for a closed loop, etc...... plus i am not in love with the BB look. i am glad i tried it but i do like the look of a sand bottom better.