I bought some blyxa japonica from a LFS, it was in pretty bad condition but hopefully I could save it. Then found someone locally with it and got a few also.
My tank can grow plants, everything in there is super healthy. But unfortunately it wasn't enough to save the store bought blyxa japonica, but the ones I received from a local hobbist tripled in size.
Sometimes, some stores, it's best to buy the plants before it hits their tanks if they don't have the proper conditions for growing plants. Sometimes, it might be better off to buy plants off bca members who has them healthy growing and thriving in their tanks.
I guess the other advantage of buying plants off local members is they are already in the submerged forms, where as some of the lfs ones and aquaflora ones are emersed forms.
Although I've had a lot of success with aquaflora plants transistioning from emersed to submerged growth.
I need to rent about plants and LFS too.
Today I almost got deceived by a non-aquatic plant packaged in a bag filled with water (unlabeled) and displayed among other (unlabeled) aquatic plants. It looks like large sheets of moss, composed of moss like scales into a feathery frond, with fresh white roots starting to protrude from the underside of the fronds.
It turns out to be Selaginella willdenowii, which is not an aquatic plant.
So just be careful and don't let impulse take over when an unfamiliar yet stunning plant comes into sight.
Here are some plants that are commonly sold as aquarium plants but will actually survive better as houseplants.