Review on Premium Foreground Seeds for Freshwater Aquarium Live Plants: Ideal Carpeting for Shrimps, Betta, Goldfish, and Guppies by Dana Wilson

First off, it's not a bryozoan. I knew about it but thought it was still an aquatic plant, maybe some kind of hygrophilous stem plant that is still a pretty good aquarium plant and takes up a lot of nitrate. I figured it would be a cheap and fun way to just grow a massive amount of stem plants, what harm could it do? Well... only about 50% of the seeds will germinate, which is still good coverage, but those that don't germinate remain on the substrate as a clear, sticky, gooey mess and cannot be removed without ruining and uprooting what you have are grown. And the roots are so thin that once uprooted they will not be planted or stay down. I left the goo there, assuming it was natural plant material and thinking that eventually it would break down and other plants would grow on it. Planted more plants, the tank got stuck, I forgot about the goo of seeds that may or may not linger under the growing plants. Many weeks later everything looks great, it's time and I add shrimp and small fish. Well, the sticky seed mass was still hiding in the substrate under the growing plants. The gooey mess left by the seeds got on my shrimp and fish and drowned or suffocated them all because they couldn't swim or function with the stuff stuck to them and they died the stuff didn't come off. I had to rip open the entire aquarium, remove all plants, trees and rocks and throw away the substrate to get rid of it. Huge waste of time, money and effort. This stuff is fine if you just want to grow it in a small terrarium and never want to touch it again or put anything alive in it that could choke on the seed slime. Otherwise it is absolutely useless.