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Plants have stopped growing - your advice please?

This is a discussion on Plants have stopped growing - your advice please? within the Beginner Planted Aquarium forums, part of the Beginner Freshwater Aquarium category; --> I agree that the main thing here is probably the light. I believe you now have two 10w CFL Daylight 6500K bulbs, so that ...

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Plants have stopped growing - your advice please?
Old 03-16-2013, 06:41 PM   #21
 
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I agree that the main thing here is probably the light. I believe you now have two 10w CFL Daylight 6500K bulbs, so that should be fine. That is what I have over my 10g and my 20g, and the plants thrive--and the 20g is plants only (no fish, it is my QT for new fish). And interestingly algae is never an issue in these tanks.

I won't argue about possible benefits of increasing the KH for the carbonate, that is something I have never bothered with. But I will say that my tanks have near-zero KH and have for 25 years. I have never raised it, except when I was using half a cup of dolomite in the filter for a time. But I didn't have a KH test back then so for all I know, that was minimal anyway. I do know that my tanks are now zero KH and the tap water is 7 ppm which is less than 1 dKH. And the plants are fine.

Your GH at 5 dGH should be sufficient. I use Equilibrium to raise mine from near-zero in the tap to 5 and 6 dGH. IF the GH were too low, you would have iron deposits on the leaves (iron replaces calcium when the latter is not available) and these are brown blotches that increase in size, killing the leaves and then the plant. A photo might pin this down, but at 5 dGH I do not expect this; my swords improved rapidly.

To the plants. If these are those in the photo, you have higher-light requiring plants. E. osiris (which is I believe what that sword is) needs more light, and nutrients. I had one that wasted away and that was in my tank with Flourite enriched substrate and slightly more light. My other swords are fine. The stem plants, Cabomba and Wisteria, need very good light. I have no luck growing either due to minimal light.

Better plant choices would be pygmy chain sword, chain sword, crypts, Brazilian Pennywort.

Byron.
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Old 03-17-2013, 12:26 AM   #22
 
Some pictures - maybe they will help.
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Old 03-17-2013, 11:39 AM   #23
 
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I still say light was the likely issue. You now have two 10w bulbs, but only had one 13w previously. The plants are not that bad at all though. With the two bulbs this should improve. To recap if I remember correctly, you are dosing Flourish Comp twice weekly. And the photoperiod, is it 8 hours daily?
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Old 03-17-2013, 03:21 PM   #24
 
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I still say light was the likely issue. You now have two 10w bulbs, but only had one 13w previously. The plants are not that bad at all though. With the two bulbs this should improve. To recap if I remember correctly, you are dosing Flourish Comp twice weekly. And the photoperiod, is it 8 hours daily?
Byron,

I am dosing Flourish Comp twice a week, plus K2SO4, plus Equilibrium. The photoperiod had been 6 hours and is now 7 hours. I still get the feeling that I'm not touching the problem with plants not growing. Or maybe I dosed too little Potassium. I hope light is the only issue.

Steven
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Old 03-17-2013, 04:33 PM   #25
 
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Originally Posted by Nemo the Clownfish View Post
Byron,

I am dosing Flourish Comp twice a week, plus K2SO4, plus Equilibrium. The photoperiod had been 6 hours and is now 7 hours. I still get the feeling that I'm not touching the problem with plants not growing. Or maybe I dosed too little Potassium. I hope light is the only issue.

Steven
I don't see fish in the photos...is this a fishless tank? This would mean perhaps a shortage of ammonium and/or CO2. In my 20g plant only tank, the plants are very slow but they remain green as yours in the photos.
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Old 03-17-2013, 04:39 PM   #26
 
No, I have seven Pristella Tetras, but the pics were shot at night and they were sleeping behind the wood. I'm planning to add a centerpiece fish.
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Old 03-17-2013, 05:31 PM   #27
 
A Nice Picture Of an E. osiris

http://www.tropica.com/en/plants/pla...n.aspx?pid=072

Steven
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Old 03-17-2013, 05:43 PM   #28
 
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Yes, mine did look like that for a couple months, then it started weakening, to the point where it completely died, roots and all. If I ever see it locally again, I may try it once more, now that I have the 70g reset.

To the prior post, are you leaving ther substrate alone, not vacuuming it? This is an important source of ammonium and CO2.
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Old 03-17-2013, 06:25 PM   #29
 
No, I hardly if ever vacuum. Can't understand why the water is so clear...
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Old 03-24-2013, 04:53 PM   #30
 
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Originally Posted by Nemo the Clownfish View Post
No, I have seven Pristella Tetras, but the pics were shot at night and they were sleeping behind the wood. I'm planning to add a centerpiece fish.
I do have an AquaClear 30 adjustable speed and it's set a little over 20, but it seems to be helping with the Cyano - more circulation. I am using their sponge and that's it, and I wash it in tap once a week.

Steven
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