Hc?

ccLansman

Guru Class Expert
Jan 22, 2008
375
0
16
Vista, Ca
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.
 

Gerryd

Plant Guru Team
Lifetime Member
Sep 23, 2007
5,623
20
38
South Florida
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...............
 

phanmc

Lifetime Charter Member
Lifetime Member
Sep 22, 2005
44
0
6
My first experience with HC was from a seller who grew most of his HC floating.
 

Generals

Prolific Poster
Jun 27, 2008
36
0
6
guys, when you trim HC, and plant the trimmings in the substrate of an emersed tank, will it survive and grow?
 

Generals

Prolific Poster
Jun 27, 2008
36
0
6
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...
 

VaughnH

Lifetime Charter Member
Lifetime Member
Jan 24, 2005
3,011
94
48
85
Sacramento, CA
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.
 

ccLansman

Guru Class Expert
Jan 22, 2008
375
0
16
Vista, Ca
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?
 

Generals

Prolific Poster
Jun 27, 2008
36
0
6
VaughnH;27700 said:
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.

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

Generals

Prolific Poster
Jun 27, 2008
36
0
6
ccLansman;27702 said:
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?

well.... i have practically no experience in this since im just starting out, but ive read a lot that if you overdose co2 after flooding (without fishes of course), the leaves won't melt

but i think we have to ask the more experienced aquascapers here=)
 

digiSalero

Junior Poster
Apr 30, 2007
15
0
1
Seems to me like the only difference between going from emmersed HC to submerged HC is the exchange of CO2. Emmersed HC gets it's CO2 from the surrounding air. Submerged HC gets it from the water. If the HC is having trouble taking in the CO2 in the water, my guess is that it would have some trouble maintaining it's emmersed form and may "melt" away.

I would say increase your CO2/water circulation.
 

custom240g

Junior Poster
Jul 3, 2008
4
2
1
41
Martville,NY
I do it all the time, as long as the trimming have a root or two they should survive. From my experiences the more i trim my hc the better it spreads
 

Tom Barr

Founder
Staff member
Administrator
Jan 23, 2005
18,695
736
113
Well, here is the answer about HC going from Emergent to submersed:

4 weeks after:
resizedHcweek4.jpg


1 week after flooding:
leftside180week1.jpg


Day of flooding:
longshotafterfillingHC.jpg


1 Week before flooding:

resizedHCweek7.jpg


This definitely shows there's some other issues with the melting other than transition from emergent to submersed culture.

That was one of the criticisms that where levels against my initial promotion of the DSM, and some theories I'd mentioned prior. Rather than arguing with these clowns, I went the other way and did a simple test to show it worked.

But now I know what the main issue was in order to apply the theory.
It's mostly gas exchange. Which is what I've said for some years.

If anything, the plant's growth rate accelerated, due to water column uptake of nutrients and less support, more buoyancy. This allows more light to penetrate the mat and makes it fuller/fluffier.

This as well as many other folks, (so it's not just me, or that I'm somehow "special") suggest that it cannot be due to submersion, the melting is very likely due to poor CO2.

It is a very easy plant to work with as it is very easy to grow large amounts in hydroponic like culture like I detailed in this tank above. So you can grow plenty of it and torture and test all sorts of treatments.

This DSM makes it very easy to grow.
It will never save you from poor CO2 or poor aquatic conditions however........

Regards,
Tom Barr

Regards,
Tom Barr