2x 10% changes isn't as effective as 1x 20% Weekly.
I think your stocking would be alright if you think you're able to keep up with a little more maintenance, otherwise I'd look at getting rid of the Uaru if you decide against it.
I think your stocking would be alright if you think you're able to keep up with a little more maintenance, otherwise I'd look at getting rid of the Uaru if you decide against it.