I am still not sure about what I want to do with the overflow if I want to make it go all the way to the bottom of the tank or just the small one I mocked up.

Nice job! The first tank we drilled cracked. We paid someone to drill the next one. :lol:

Maybe try another mock up to see how a full length one looks?

I have worked with tiles so I know patience is key - Nothing like nibbling a tile for 15 minutes only for it to crack at the last second.

Also I drilled very slowly and did it in the back yard with the garden hose running cold water over the hole saw - I drilled quite slow each hole took about 5 minutes.

I have had NO time this weekend for my tank, worked 15 hours yesterday and back this morning for more punishment !

Stupid Sump
 

Having problems setting up my sump. I can not get the proper balance between out flow and inflow - I am thinking of abandoning this 15g with sump for a 20g all in one .

I never worried about balance when I as setting up my sump on my display. It drains wide open. It is noisy, though.

Thanks for the reply, I guess a little noise wont hurt !

This sounds dumb but works.
Thread some fishing line from the top of your sump inlet all the way down to sump. even if its open full flow. it will soften the noise. not a cure, but helps.

Regular monofilament, fly line, or something else?

Monofilament is what I had heard before. I've never tried it but others have and it apparently works.