Was wondering if it was ok to float hc on the top of my tank so that it grows more vigorously? Anyone tried doing it this way? I figured this way it was getting high light and has access to co2 in the air and the tank, and will help promote good root growth.

This will work well for a lot of plants...............

I know there is at least one big thread where folks are using containers on the surface to do this...............

well are you talking fully emersed or just floating around inside there tank that is still full of water?

Yes they are floating in a tank of water. Your question WAS about floating HC, no????

My first experience with HC was from a seller who grew most of his HC floating.

guys, when you trim HC, and plant the trimmings in the substrate of an emersed tank, will it survive and grow?

i recently planted mine emersed in my fish tank...
havent tried it floating though..
im also new to the planted tank thing...

maybe the more experienced folks here can share some experiences and tips...

On another forum one person said they "plant" HC by just tossing the pieces onto the wet substrate to grow them emersed. I tried this with glosso, and it worked for that. If you are trying to grow HC emersed, and do a trim, just leaving the cuttings where they fall could result in them taking root right there.

i have heard this on other forums and want to know its validity and what the deal is, goes something like this.. "i grew my hc emersed but when i filled the tank with water it melted."

What is the deal with swapping from air to water and does it actually melt every time or only some times?

oh really?! wow... that sounds too convenient!=) hehehe
well it worked for your glosso, it must work for HC hopefully.....
thanks...