I've got two planted tanks. Looking for a ground cover in the 10gal that stays relatively short (an inch or two), with a lower lighting need. We just started this adventure with the 10, our 14 year old is heading it up. The 5 is my shrimp tank. I do have a co2 set up, but I'd rather not use it on a small tank. I dose with Thrive S once a week after water changes. Any ideas are appreciated.