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Why cant i keep HC Cuba??

southwestsurfer

New Member
Joined
28 Mar 2009
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3
Good Evening,
This is my first post so a big hello to everyone. My first attempt at a planted tank is going quite well. Except I cannot grow Cuba.
I have a 40ltr tank with 3WPG. I have a regular subtrate but use plant tabs. I have pressurised Co2 and dose weekly with Tropica plant nutrition +.
I always put the cuba in and after a few days it turns brown and dies. My latest attempt went in on Sunday and is already turning brown.
What am I doing wrong?
Great site by the way :D
 

LondonDragon

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21 Feb 2008
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We both have the same problem, I can't grow HC in my tank either lol and everything looks right but its not apparently :( I think with mine it must be the local water, I have tried everything also! High CO2, high dosing, high light, low light lol
 

southwestsurfer

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28 Mar 2009
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I have a fluval U2 and Interpet PF1 filters. How would I go about increasing flow? This plant is the reason I went planted, I hope I get it sorted! :?
 

Superman

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29 Jan 2008
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Cheltenham
That means in your 40ltr tank you're getting (what's rated) about 400lph + 135lph = 535lph.
Is that 40ltrs in total or with the substrate, decor and filters in.

In a smaller tank, it's easier to make sure that flow is good as the filter output will cover a higher percentage of the tank.

Can you see the HC moving in the water or air/co2 bubbles going passed/through it?

If you're dosing co2 and ferts well for your light levels, then flow could be the issue.

There is a bit of die off with HC when it's settling in and will take a few weeks to settle, but if you're sure it's not that.

Have you considered an external filter?
 

southwestsurfer

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Thread starter
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28 Mar 2009
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External isnt really viable at the moment, its always in the back of my mind though.
I cant see any CO2 bubbles passing through the cuba. Hmmm looks like I may have to concentrate on flow then. Would a small power head help?
 

ceg4048

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southwestsurfer said:
I have a 40ltr tank with 3WPG. I have a regular subtrate but use plant tabs. I have pressurised Co2 and dose weekly with Tropica plant nutrition +. ..
So I guess this means 30 watts over a 10G tank right? Is that T5? If so that's an awful lot of light and could easily be a major causal factor. No drop checker and only dosing TPN+ once a week sounds like a recipe for disaster. I suppose it's not surprising that HC doesn't cooperate. AS well as the flow issues addressed, try increasing the CO2, lowering the light and study CO2 Measurement Using A Drop Checker for starters...

Cheers,
 
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