What am I doing to my poor Starougyne Repens and Ammannia Bonsai?? Deficiency? - The Planted Tank Forum
 
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post #1 of 9 (permalink) Old 05-18-2011, 01:22 AM Thread Starter
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What am I doing to my poor Starougyne Repens and Ammannia Bonsai?? Deficiency?

Lighting:
2x T5HO for 7hr
1x T5HO for 3hrs

EI Liquid dosing with a smidgen of metricide to prevent fungus

Pressurized Co2 via inline UP! Atomizer w/ a lime green DC

Rena XP3 w/ spraybar and Koralia Evo 750 for filtration and flow.

Mixmatch of "planted tank" gravel from carrib sea, eco complete, and some soilmaster select. Root tabs have been placed throughout the starougyne repens areas of the tank.

No herbivorous fish or inverts.

So, with all of that said! I NEVER had luck with my starougyne repens or ammannia bonsai. They always get what I think looks like severe GDA, as well as loosing their lower leaves after becoming engulfed. They also seem to be somewhat brittle, im not sure if this is normal for the repens. Here are some pics. What am I doing wrong?!?!






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post #2 of 9 (permalink) Old 05-18-2011, 01:33 AM
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looks like low co2 and too much light.


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post #3 of 9 (permalink) Old 05-18-2011, 01:37 AM
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Not enough macronutrients. Notice how only the old leaves are dying away. You have lots of GSA which is a classic sign of a phosphate deficiency.

Tank: 20 gallons, 62 watts t5, DIY CO2

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post #4 of 9 (permalink) Old 05-18-2011, 02:10 AM Thread Starter
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Quote:
Originally Posted by mistergreen View Post
looks like low co2 and too much light.
Ill try boosting the co2 some more, I was just scared since its already a really light green, almost yellow.


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Originally Posted by Cardinal Tetra View Post
Not enough macronutrients. Notice how only the old leaves are dying away. You have lots of GSA which is a classic sign of a phosphate deficiency.
Are you sure about that? Im dosing EI according to this thread which actually recommends more KH2PO4 then what Tom has posted on his site.

For my 75G tank I mix the following in a 500ml dosing bottle:
2TBS KNO3
2tsp KH2PO4
25ml Metricide
1 dose = 60ML

yields ~8 doses
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post #5 of 9 (permalink) Old 05-18-2011, 02:25 AM Thread Starter
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Well, after reading the Phosphate deficiency description here that very much describes the issue. Its weird though that I'm dosing more then EI recommends. Unless I'm wrong in thinking KH2PO4 provides the phosphate.
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post #6 of 9 (permalink) Old 05-18-2011, 02:35 AM
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Well every tank is different. More light, and if given more CO2, just induces more growth which increases nutrient uptake and demand. Just watch your plants and dose according to what they tell you they need. You might want to increase potassium dosing too while you're at it.

Tank: 20 gallons, 62 watts t5, DIY CO2

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post #7 of 9 (permalink) Old 05-18-2011, 02:43 AM
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I've found they really need root tabs IMO.
That said, I've grown them with absolutely no co2 in low light for months with just root tabs and a bit of flourish comprehensive once a week. In my highlight tank however, they need a LOT of potassium and plenty of co2, they cannot be fert limited or they'll start looking bad ASAP.

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post #8 of 9 (permalink) Old 05-18-2011, 04:00 AM
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You have too much light then. 8 hours of 2 bulbs should be fine. Maybe raise the light up a foot.

The algae is a good indicator.


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post #9 of 9 (permalink) Old 05-19-2011, 03:35 AM Thread Starter
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I boosted my CO2 by .5 bps, which is now 2.5 bps. I'm going to increase kh2po4, but how much would you recommend? I'm dosing 1/4 tsp daily right now.
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