[Bert H]

I used diy for about 6 months until I got tired of mixing up new batches of yeast/sugar every 2 weeks and switched to pressurized. But diy is certainly a way to start very cheaply. The easiest, cheapest way I found, which I also used, was to merely feed the bubbles into your hob filter. In my case, an Aqua clear. The bubbles get sucked up into the filter, trapped in the sponge and slowly dissolve. Don't use carbon with the filter.

Some people claim, this causes some problems with the filter, but I didn't find any. Matter of fact, I still inject my pressurized into the filter on 2 of my tanks.