I now have a simple 2x2 litre diy running with fleischman yeast. Its running well. I think I'll see how long im good for and I'm going to try wine yeast, molasses and gluten mix next. Its running on a bubble ladder now but I think i'll set up a 1 litre plastic bubble counter next go and run it into the filter. I was not using enough yeast, and I removed my check valve, there was just not enough oomph to push up into the tank. I know its dangerous no check valve but I'll just keep an eye on it. I'm planning the paintball thing too, but I'll give this a go for a bit since I got it working. My pellia moss is not liking the cap full of excel each day, so I'm stopping that stuff. Thanks for the 2 cents.