It's my understanding that Red Sea changed that fitting when they started shipping the v3 sump models. I got one of the last v2's just before they offered v3. I don't know for sure that they're not making the part anymore, but I just heard people were unable to unscrew the barb on v3.
It’s been a couple of years it seems since Red Sea started shipping the V3’s. I bought a couple parts 42221 and thought I couldn’t get the barb part off. I had a helper and together with a strap wrench and big crescent we got them off.
Hey @powers2001 , thanks for your interest! It's a lifereef refugium and then a friend of mine made a decal on their Cricut for it. It's only a 10g and is probably a little undersized for my tank, but it was originally made for a 50g and then found its way to this setup.
Looking at those two part #'s for a RSR 250/350 the only difference I can spot is the length by 2 1/4 inches.
@OCDean thanks for the info but I found my pipe.
I don't have a 900, but the sump in my 650P is pretty snug in the cabinet. There's no way a 6" diameter tube will fit in front or beside it. You'll have to get creative with the plumbing if you want it inside the cabinet.
Would the 3.5" diameter tube size fit?
It does look a little flimsy. I don't like aluminum stands. Time will tell.
