
Just overnight it seems, this brownish-orange STUFF has grown all over our rocks, our fake plants, and is beginning to cover the sides of the tank as well. I mean this stuff GREW FAST!! Our last Molly is swimming vertical now and is struggling. We've also lost a Guppy and our pregnant Molly as well since this started.
It's just slimy stuff that is taking over!
My hubby has done well with our tank so far - we got it for Christmas and it has been thriving and sparkling clear now since we set it up. This just happened all at once. We cycled our tank before adding fish, and he's changed the water too to keep things nice and clean. What is this stuff and what do we do to keep it away? Our tank looks BROWN now with this gunk all over!! ACK...

The fish have been happy and thriving well until now.
Thanks for all input and help!!
** We've also successfully treated ick when we first got the fish, and that's all but gone. My hubby also adds Ammonia Chloramine Elimantor when he changes the water for the water quality, and EasyBalance to stabilize pH and KH.