I like it. I was recently thinking of keeping some goldfish in a planted tank. I'm going to try to find some plants they won't try to destroy. I've never had any goldfish before, but I've been wanting to get some Red & White Ryukins. Since you've been keeping them for so long, do you think keeping 2 in a 29G with a canister filter would be OK? I know they need a decent amount of space and filtration because they can be messy, so I wasn't sure if it's enough space. I really wanted a nice pair in there.
Ryukins usually top out at 6-9'' when fully grown, so they are smaller than many of the goldfish in terms of length. I think 2 of them in a 29g would be fine, but that would really be the limit for fully grown ones...of course a larger tank is always ideal!
Yeah, I didn't want to put anything else in there. I assumed that would pretty much be pushing the limit for stocking. I've heard they can be that big, but I've never really seen it. I think the biggest I've seen, with fins all spread out was probably only the size of my hand fully extended. Thanks for the info.
Almost all plants can get their nutrients from the leaves, including terrestrial plants. Aquatic plants will do very well in inert gravel as a substrate, if the gravel is sized so the plant can be held down and there is room for roots to grow. Even those plants commonly called "heavy root feeders" are only assumed to be that because they have big vigorous root systems. But, many aquatic plants grow roots just to anchor them in place, not to feed themselves. I have grown "heavy root feeding" sword plants that completely took over the tank in a few weeks, with only water column dosing of ferts. The ideal substrate would have lots of nutrients so the plants can obtain their nutrients from either or both the water and the substrate, but that isn't essential.
I thought it would be better to get the liquid ferts.
My goldfish try to eat the plants too, they already ate the anacharis and the cabomba, so I had to remove those. They can't eat the large leafed ones and the rotala seems uninteresting to them.
Thanks for the tip!
Do you think it's true, though, that "heavy root feeders" really can absorb their nutrients from the water column and that their roots are mostly to hold them in place, as that post said? Should I try and find out, or try to get root tabs anyway and be safe?