I bought both the lilly and apogenten bulbs from Walmart. They both haven't done anything yet and it's almost been a month. They have a guarantee though, so I am planning on sending the bulbs back to the address on the back of the package. I have heard that they usually send you good bulbs once you do that, who knows how long they've been sitting on the shelf at Walmart!
50/50 chance that they will sprout in my expieriences with these bulb's.
Lily bulb's seem to produce better, but if they do take off,,they can quickly sprout large leaves which grow to the surface and possibly block too much light to other plant's.
I've used them. So far only 1 bulb has grown out of 3, but for that price I can't really complain. It is a Red Tiger Lily, and is doing wonderfully in my tank. Anything with water onions such as petsmart's random bulb packages will grow too, since they don't completely shut down when they're in bulb form, and usually already have visible growth as a bulb. The lily did take over a month to begin to grow. I have other bulbs in the tank from walmart that have been in for less than a month with no growth, I'm still giving them a chance. Maybe they'll sprout.
I bought a pack and only the water lily sprouted. It's beautiful though. I have to prune it really aggressively to keep from getting too big. And on the back of the box it should explain how to replace the bulbs that don't sprout for free.