Dirted tank and co2 regulator question
Sorry didn't know where to post this but it's mainly about substrate so I thought it should go here.
I'm Finally getting back into the plant game after a couple of year. I've only ever down small tank 2ft and smaller but now in a 4ft. I''m in Australia and we have strange tank dimensions so this tank is around 45g.
I've just setup a citric acid DIY co2, but it's already becoming annoying, so was thinking of setting up a proper co2 system. Money is a bit tight so I was wondering if those cheap regulators on eBay are any good (I know they aren't going to be great but the good ones cost hundreds in Aust) ?
Now onto my main question. Because money is a little tight, I have a choice between aqua soil or co2 and was thinking of saving $$ on soil.
The issue is I already have fish in this tank so I'm worried about adding organic potting mix with fish. Would it be possible to use a spare tank to "leach" of the ammonia etc than transfer it to my main tank or is it just not worth the hassle and use a proper aqua soil?