Glosso leaves turning yellow? - The Planted Tank Forum
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post #1 of 18 (permalink) Old 01-22-2004, 03:24 AM Thread Starter
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seems like a sign of deficiency...
what is that usually a sign of?



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post #2 of 18 (permalink) Old 01-22-2004, 03:52 AM
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New leaves? Old leaves? How and what do you fertilize with? What are you water and lighting parameters. Gotta give us a lot more to go on...
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post #3 of 18 (permalink) Old 01-22-2004, 04:14 AM Thread Starter
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old leaves, i fertilize with flourish and flourish iron 1ml/week
i do a 40% change per week of the water
but i dont know the parameters because i dont have a test kit
and having 26W PC on my 10G tank



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post #4 of 18 (permalink) Old 01-22-2004, 04:47 AM
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I'd suspect nitrate and/or potassium deficiency since you're not dosing those at all. Some basic test kits would help clear the picture a little more, though.
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post #5 of 18 (permalink) Old 01-22-2004, 05:05 AM Thread Starter
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Thanks. I got only these 2 because they were available at my LFS, they didn't have anything else. I guess I'll have to order the Potassium and Nitrate from online.
Any recommendations on a cheap test kit? Price is my main issue why I never got them before.



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post #6 of 18 (permalink) Old 01-22-2004, 12:46 PM
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There really aren't any cheap & reliable Potassium test kits. Just dose enough to attain 20ppm once a week.
Aquarium Pharmaceutical's Nitrate test kit is decent and cheap.

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post #7 of 18 (permalink) Old 01-22-2004, 01:05 PM
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I would suggest a Red Sea nitrate test kit because it's much more accurate at lower nitrate levels. Also I use a Red Sea phosphate test kit.
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post #8 of 18 (permalink) Old 01-22-2004, 01:50 PM
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Quote:
Originally Posted by ming
....and having 26W PC on my 10G tank
For some reason that just doesn't seem like enough light for glosso....but that's a gut reaction. Anyone out there growing nice glosso under less than 3 wpg?

This is a secondary concern to the limited nutrients you are giving your plants as discussed above.

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post #9 of 18 (permalink) Old 01-22-2004, 03:53 PM
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Can someone post a little pic of how "nice" Glosso should look like?

After redoing my 10 gal recently, the Glosso just started to spread out. Actually, last night I added Jobes to the substrate, which will help to keep the leaves green. It is not nice yet, the original leaves still covered with the usual "new tank algae". That's under 2x 10W Walmart bulbs with good reflectors. I suppose the lighting is similar to 2x 13W AHS fixtures, maybe a little less. I hope it will cover up the substrate completely, although it will probably not grow as fast and strong and in three layers like under 3x as much light.


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post #10 of 18 (permalink) Old 01-22-2004, 04:18 PM
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Quote:
Originally Posted by Wasserpest
Can someone post a little pic of how "nice" Glosso should look like?
You've never seen Amano's books? :shock:

Sean

Aquascape? I'm a crypt farmer.

It's a fine line between fishing and standing on the shore looking like an idiot.

That IS an aquascape, it's titled "The Vacant Lot".
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post #11 of 18 (permalink) Old 01-22-2004, 04:32 PM Thread Starter
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Quote:
Originally Posted by Rex Grigg
I would suggest a Red Sea nitrate test kit because it's much more accurate at lower nitrate levels. Also I use a Red Sea phosphate test kit.
are phosphates and nitrates the most important factors i should be testing for? $20 on kits isn't too bad, i thought it was going to be like $50+



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post #12 of 18 (permalink) Old 01-22-2004, 05:49 PM
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Quote:
Originally Posted by SCMurphy
You've never seen Amano's books? :shock:
Oh, Amano Glosso. A gently swaying sea of green. 8-10 W/gal?

You are right, Glosso that nice is probably not achievable with 2-3 W/gal.

I will post some "low light glosso" pictures once it has filled in a little.


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post #13 of 18 (permalink) Old 01-22-2004, 05:52 PM
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Quote:
Originally Posted by ming
Quote:
Originally Posted by Rex Grigg
I would suggest a Red Sea nitrate test kit because it's much more accurate at lower nitrate levels. Also I use a Red Sea phosphate test kit.
are phosphates and nitrates the most important factors i should be testing for? $20 on kits isn't too bad, i thought it was going to be like $50+
For planted tanks, NO3 and PO4 are very important factors to test for. You should be able to get test kits online for ~$8 each, plus shipping. So with about $20 you should be set.


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post #14 of 18 (permalink) Old 01-22-2004, 06:34 PM
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Quote:
Originally Posted by Wasserpest
Quote:
Originally Posted by SCMurphy
You've never seen Amano's books? :shock:
Oh, Amano Glosso. A gently swaying sea of green. 8-10 W/gal?

You are right, Glosso that nice is probably not achievable with 2-3 W/gal.

I will post some "low light glosso" pictures once it has filled in a little.
I was just kidding, his glosso is stiff from all that light, no swaying there.

James' (aquaverde) "lower 40" tank has some nice lower light glosso in it.

Sean

Aquascape? I'm a crypt farmer.

It's a fine line between fishing and standing on the shore looking like an idiot.

That IS an aquascape, it's titled "The Vacant Lot".
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post #15 of 18 (permalink) Old 01-23-2004, 10:31 AM
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Oh, it's not lower light glosso, it just looks that way :lol:

I have had 3wpg or better in that tank since the glosso was planted. It gets overshadowed a lot, though between trimmings, and that light level in a 10 is really not the same as it would be in a bigger tank due to coverage issues. Probably only the center of the glosso in my tank gets "high light".

I cut a good portion of it out night before last to put in the 30 (which has just been upgraded to 96W PC).

James
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