A rio leaking oil has destroyed entire tanks. If you do a search I remeber a long thread a while back about them. I had a 2100 burn up in my sump once. That was before I went reef so nothing was lost. Plus I dont think that it leaked any oil, smelled like hell though.
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This was the best fish I've ever owned. I raised him from when he was about 2" long until he was over a foot. He knew me and would follow me around the room (from one end of his tank to the other). He (along with about a thousand dollars more worth of fish) were killed when a RIO 2100 running as a circulation pump with no backpressure shorted out and electrocuted everything in the tank.
A couple years earlier I had a RIO explode, leaking the black oil into the tank. Luckily I was in the room when it happened and was able to contain it, then do several water changes over consecutive days to eliminate the problem.
After the puffer's tank was fried, I doggedly tracked down a phone number for the parent company (if you look at a RIO's box, there's no phone number anywhere on it, and they don't respond to faxes or emails), and got ahold of the owner. He was belligerent and threatened to sue me as soon as I told him his pump destroyed my tank.
I have 4 Rio pumps running two pumps. What I find irritating is they don't restart if they are temporairily shut off to feed the tank etc. One has to probe the impeller to restart the pump.
What does the group recomment as replacement submersible pumps?
I never had a problem with my rio 1700 restarting.
I hear that mag pumps and Quiet Ones are both good.
I have a mag 7 that works great. Magnetic drive pumps have no oil to leak and they should be able to restart. They have the added benefit of being able to be plumbed in line if you chose to later on.
Thanks for all the replies- didn't know they could blow up and kill everything. Looks like I'm gonna have to replace the ones in my tank. Luckily it is only two.