beananimal exact specs

[Carl68]

Dear community hoping someone that has implemented the beananimal design using his exact specs can chime in on my inquiry:

this Friday (tomorrow) i am finishing up the plumbing (hopefully) on my 150g. I have a couple of questions: My tank is bottom drilled and with the bulkheads will support 3 drains 1.5" each. Since it is an internal overflow i wont be incorporating the T and the screw top PVC standpipe just the 3 returns with elbows (primary, secondary, emergency). each will have an elbow (possibly with strainer) the third being upturned (the third will be 3/4" from weir. all three will be in a row same height. with the emergency being upturned so in effect higher. the secondary will have a hole drilled in the top of elbow (what size drill bit do you recommend?). the sump is in the stand below; the stand is a little taller than normal (maybe 2 feet taller), my pump is the large varios 8 adjustable. and i have a gate valve on the primary only. So with that small hole it will break the siphon and only a small amount of water will flow into that pipe? should all the pipe be glued within the overflow?
do you see any problems?
grateful for your input

thanks Carl

 

[laverda]

You want the second pipe a little higher then your primary. Otherwise what is to stop water from flowing that way instead of the primary drain? There is nor real need to glue any of the fittings inside the overflow.

 

[Carl68]

Laverda
thanks for reply !