Best place to drill a plywood tank for overflow

[briflikk]

I am in the process of building a 240 gallon tank and plan on using a 70 gallonish sump for the filtration .. I have never dealt with overflows and sumps before so I probably will have more questions down the road .. from the info I have gathered the tanks are normally drilled along the top or thru the bottom .. main benefit I can see from bottom placement is I can put the tank right against the wall opposed to 3-4" away .. is one better then the other or is it just personal preference? .. and pictures would help on how to construct the boxes to regulate water height or any pipe layouts that use the filter screens .. thanks for any info

 

[Pharaoh]

I think it mostly fall to personal preference. Some tend to go higher as to not have sand get into the overflows and to not see the PVC in the tank.

 

[turtlesrock]

i would drill from the bottom. its alot less PVC , and it looks alot cleaner

 

[FSM]

What's the tank made of?

 

[briflikk]

What's the tank made of?

Plywood

 

[koop171]

It's up to you. In the end you can drill a tank where ever you really want as long as you have the right sized inlets and outlets. and the proper pumps to go with them.

 

[flikkster]

How is the tank working out Dad. hope its going well

 

[briflikk]

its going good ...click the link in my signature to follow along

 

[nolapete]

Check out Flexpvc.com for bulkheads. As far as drilling goes, it's personal preference, especially with a plywood tank. Glass tanks are best drilled in the bottom.