Wow, I like this site. Seems more friendly than the other 2 I always frequently checked in at. I am fairly new to the hobby (almost 3 years now) as compared to most. Glad to be here. MOJO, you seem like the go to guy on SKIMMER questions. So here we go. I have recently set up a old 220 gallon (built like a TANK in 1986) 7'x24"x24" Oceanic FOWLR tank. It was really old school, with spray bar return holes in the center bottom. After much work on covering holes, and re-plumbing this thing, and repairing and re-configuring the 6' sump, finally its up and running with a new reeflo 2600 external pump. Has cycled and have started to stock a couple fish. Its going to be a semi-aggressive tank. Will probably have eventually about 10 - 12 Large fish. It came with a bunch of obsolete equipment. Which brings me to your area of expertise. This thing came with 2 old style skimmers which I would like to see if I could get working until I can afford to buy a newer style cone type. The smaller of the 2 has a sticker on it that says its a "Seaquest" "Made in the USA". I cant find anything on it. It came without a pump, so I have tried a few I have here. A older style Maxi-jet 1000, a RIO 2500, and most recently I bought a new Sedra KSP-3500 needle wheel pump thinking I could get one of these units working good enough until I get settled on what to purchase and recoup some hobby money. The constant first level of the sump is 9". So that is where I have tried them at. I have a light bio-load right now of 3 small damsels, a juvey maroon clown, and a wrasse, and the biggest Maroon Clown I have ever seen (9"), and a crab. Tank cycled a month ago, and did another little mini-cycle when I added the last 3 fish (the 2 clowns and wrasse), and has been stable since then. Except the nitrates started climbing last weekend to almost 60, so I did a 30 gallon water change, and it brought it down to about 20. I have tried different combinations of the pumps on both of the skimmers. Along with ball and gate valves on discharge side, and keep the discharge pipes out of sump water line. I also bought 2 new aireator stones and even tried a new oceanic and red sea wood aireator block for the bigger type skimmer which had one on it. The wooden one goes inside the second inside tube, and the small ceramic stone went into the 1/2" down tube from the pump. I am getting a little junk in the bigger one, if I really play with it every day. Any help would be appreciated. I am trying to send pics, but can't seem to.