Originally Posted by BASHK
Hi krinedawg i appreciate your help.i originally ordered this tank for a marine set up and it was customised to my own taste it has an internal weir in the middle and it has 2 holes for return and and one for intake into the sump.i used the idea from la fish guys video on youtube you could check that out if you type it up.yes defo im going to post pics but when it arrives.lol.its due in 2 weeks.if i block the holes and take out the weir.when the water is in,the pressure of the water want this cause a leek.
Okay, I checked out the LA Fish Guys, what episode are you referring to?
You can still use the sump filter system on fresh water if you want to. It's a great system, not so much for small fish like my guppies or or apistograma's as they do tend to chase floating foods down the system. In my case I leave the first compartment empty only water so when the fish do come in they have a place to stay. In the second compartment I use pond filters non carbonized to catch any media that may be in the water. in the last compartment I have but not really needed as I have allot of plants in the tank is a carbon filter. After a while the carbon will wear down, and it acts as another media filter. I don't remove them until they are practically falling apart. Now you have the space where your pump goes in, I have that connected to pvc, with a ball valve on it so I can adjust the flow rate of the water so it's not so vigorous on the fish, about once a week I open it all the way and let it throw out any materials that may be in the pipe line. I let it run for about 15 minutes and then take the cloth cover over the intake to the pump and shut it off allowing for the water to rush back down the pump into the sump tank. I find this helps clean the pump out somewhat. I then replace the cloth turn the valve to half way and start the pump back up. The tank will be dirty for about 15 minutes and then once the water starts flowing again the system takes over and the tank is clear again.
Now different people use different media's in the filter system, I use pond filters which basically looks like a piece of air intake material used on furnaces (it's not the same stuff just looks like it).
As for plugging the holes it would be just the same as if you had pvc in it using it for the sump filter, only it's capped at both ends and screwed tight to the O rings. The O rings will act as a seal against the caps if it leaks then the caps aren't tight enough against the seal. DO NOT OVER TIGHTEN you can snap the entire back of the tank in half by wrenching on it too hard. Your best option would be to make them hand tight, fill the tank if it doesn't leak your good if it leaks a bit tighten them until it stops then your done.
Either way is up to you, since you already have the tank drilled to your's specific designs go ahead and use the system as you would have with the marine tank. The only difference you have at this point is salt. It won't hurt anything by changing the type of water you use. You will just be using different media, and filters.
Oh and what is the weir? is it a wire just misspelled and if so what's the wire for?