sump/overflowbox

[x17x11x]

is there a way i can make an overflow box or something simmilar with0ut drilling the tank because i dont want to put a hole in the aquarium and im not sure where or how to put the hole. i would like to create a sump but if it means drilling i will just keep doing waterchanges alot. also i dont mind drilling in the 20 gallon that is going under the main tank...but not the main tank

 

[DAHansen]

You want a HOB (Hang On Back) overflow box. Checkout LifeReef HOB overflows. Their pricey, but that's the only "negative" I've ever heard about them.

HTH,
Dave

 

[sambrinar]

you can also get them from Dr foster/smith, good prices, check this link

Reef Aquarium Filtration: Eshopps Overflow Boxes

I haven't tried it yet. still putting my sump together, but I am going to try this one. I only have a small tank

 

[cheebman]

get an hangon over flow.. thats what i use on my 28gal. works great.