Originally Posted by somewhatshocked
Hydrocotyle will be fine, though they may want to occasionally supplement with root tabs. I've grown it in nearly every tank I've had - some with just ambient room light - and it's done well.
There are many foreground plants that can be used. Though, in that tank (I'm assuming it's the Deep Blue Professional 3gal), some sort of small Marsilea like minuta would be best.
Oh hey it's my question. Hahahaha.
Nice I got some MM lying around, may also try pygmy chain swords.