Actually, I have one running right now, still! They were a fairly popular company 15 years ago or so. I'm running a TF300. It has always worked fine. Prior to this one I had a smaller one but I don't remember the designation of it. They work pretty good for a venturi skimmer. The body is an opaque plastic so you can't see whats going on inside but it has held up well for at least the 15 years I've run it, and I bought it used. I think they lost the market to the clear cast acrylic tubes because frankly, the clear ones LOOK way cooler! I'd say for the price, give it a shot!