i'm planning to use a rubbermaid sump on my 90g setup, has anyone had one of these running for two or so years or more? i'm concerned about eventual breakdown of the plastic due to the saltwater.
Rubbermaid uses more than one material in their various products. You want the HDPE (High Density PolyEthelene) if you're aquireing a sump (stock tanks are great and come in 50, 75, 100, 150...gal.) or the food grade HDPE if you're getting a storage container. HTH, Ed
plain old walmart rubbermaid container here for over two years now. works great, only problem is you cant use baffels, so you have to be a little creative with buckets. let me know if you need more info about this.
HTH
BB
For the past 6 years, I've used 2 44-gallon Rubbermaid Brute trash cans as my sump. For 7 years, I've used the same types of cans (44 and 33 gallon) for RO/DI water, limewater, and fresh salt water with no problems.
I use the stock tank type, not like the picture above. I also have one sitting out in the backyard that horses drink out of. For the past 5 years I've been smashing it regularly with a sledgehammer to break ice off it, or heating it with a livestock trough heater. Plenty tough!
Ask the guys at Paragon Aquatics, they have a bunch of really huge ones as LR curing tanks. Mine is just 75 gal.
I have used the rubbermaids found at walmarts and kmarts for years with no problems. I almost always used the 50 gal ones and would double them up only because I liked them pretty full and it would keep them from bowing out.
I also use the stock tanks from 70 gallons all the way up to 300 gallons. Some of the stock tanks in smaller sizes are really to shallow to work well. The 70 gallon one is pretty good but might be too big to fit in your stand. It's pretty much circular.
I have used some form of plastic container for a while for a sump. I prefer the sterilite containters because they seem to be a bit stiffer and seem to have better reinforcement around the edge. BTW I bought mine at Target.