hey everybody,
last year I got a wet dry filter for my 55g tank. I decided to turn the return pump into an undergravel jet just for the heck of it to experiment because I had other HOB filters and a bad storm went through a few days later and the power went out for about five minutes. I walked into the fish room and noticed that the carpet was rather wet. Looking at the tank I immediately noticed what had happenned. The return pump had turned off with the power, so the water backsiphoned from the return valve into the sump. This would not usually be a problem because it only goes about 4" into the tank on the normal hose and would've cut off when the waer dropped below that point. but my hose ran all the way into the gravel, so it would cut off when the water had dropped to the bttom of the tank. Anyways, after 15g had drained out the other 30 or so could no longer fit into the sump and went right into the carpet, and two rooms next door. It was wonderful. Luckily my african cichlids survived the ordeal, swimming in the 2" of water left above the gravel by the time i walked in the room.
last year I got a wet dry filter for my 55g tank. I decided to turn the return pump into an undergravel jet just for the heck of it to experiment because I had other HOB filters and a bad storm went through a few days later and the power went out for about five minutes. I walked into the fish room and noticed that the carpet was rather wet. Looking at the tank I immediately noticed what had happenned. The return pump had turned off with the power, so the water backsiphoned from the return valve into the sump. This would not usually be a problem because it only goes about 4" into the tank on the normal hose and would've cut off when the waer dropped below that point. but my hose ran all the way into the gravel, so it would cut off when the water had dropped to the bttom of the tank. Anyways, after 15g had drained out the other 30 or so could no longer fit into the sump and went right into the carpet, and two rooms next door. It was wonderful. Luckily my african cichlids survived the ordeal, swimming in the 2" of water left above the gravel by the time i walked in the room.
