225 gal setup advice

[PJ1]

So I’ve just acquired a 225 gal 72x27x27 with a 55 gal sump. The tank was saltwater so I’m working on cleaning it to convert it to fresh. I haven’t done a sump before and this is a upgrade from my 150gal which I ran with HOBs. I watched the sump tutorial videos and still not really sure what I need. But the tank has overflow inside in the center back wall with a pipe out. Anyone got advice on what filtration they would run on this 225. Whether sump and/or canister or some other combination

 

[Backfromthedead]

Sump! Only advice i would give is go as big as possible with the sump. Water volume is paramount. Im currently trying to find a way to jam as big of a sump as possible under my soon arriving 140 gal.

I plan to just separate the compartments with eggcrate and keep it about 75% full. Ive seen a lot of simple and effective setups like this that work great. I prefer it to all the glass baffles and whatnot.

 

[PJ1]

This is what I have. I’m still washing out the salt. But this is the tank and it’s overflow and the sump which I’m really not sure what goes where

 

[DN328]

How many holes does the overflow box have? That will help determine the type if drain you could use. You could modify, but let's see what can be used with the sump.

 

[PJ1]

DN328 it has one hole dead center with a 1.25” SCH40 elbow draining out into more 1.25 SCH40 down the back. It’s cut off about 8” down the back so I have a bare 1.25 to set up whatever I need off of

 

[DN328]

Hmmm, so perhaps the owner had used one single drain there in the overflow. Are you comfortable drilling a second?

 

[PJ1]

DN328 yea he gave me the PVC run he used to drop into the sump. It’s pretty simple just with 1 valve in line. I’m honestly trying to avoid drilling anything new

 

[twentyleagues]

So for flow you are looking at about 1500gph max. I would not go that high with only 1 drain. I'd look for a pump that will be adjustable like one of those dcm pumps with output in the 1000 to 1300 gph range at the headheight you need. Headheight is the distance the pump pushes the water from outlet to pipe outlet in tank. As for your sump id need closer pics of the baffles but looks to me from right to left water inlet from tank put some filter socks here, center section can hold bio or heaters or both, egg crate section would hold more bio or polishing pad/sponge and final is return. Could be flipped around to. As in left to right far left inlet with socks and bio on egg crate. Baffles are set up in salwater sumps to stop microbubbles from entering the display tank gives the water and air places and time to separate. If used in the left to right scenario the first bio is a rise up be careful to not use somthing to dense as to block flow.

 

[Bertie07]

To me your sump looks like it goes from left to right, your drain goes into the first section with some filter socks or sponges, then goes through some more media, biological or mechanical, then overflows into what looks like a fluidised bed chamber but you can put anything in it. It then overflows Into what looks like a bubble wall them flows into the return pump section