Folks, if you've recently upgraded or renewed your annual club membership but it's still not active, please reach out to the BOD or a moderator. The PayPal system has a slight bug which it doesn't allow it to activate the account on it's own.
When I used to scrub for vermetid snails, I used to have it out for 30 mins, occasionally dipping in a bucket of fresh salt water to help remove debris
I use the 500 and I friggin love it.
I get probably two ish months out of a roll. It pulls some dark crud from the tank.
No smell in my sump area, this was my biggest concern.
The reefmats are a little clunky in size by nature so make sure you have ample room.
My only con thus far which is...