Sudden plant loss - need advice please! - The Planted Tank Forum
 
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post #1 of 6 (permalink) Old 04-10-2013, 03:06 PM Thread Starter
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Sudden plant loss - need advice please!

After getting my algae problem under control several months ago, my plants have been flourishing and growing well, especially the frogbit. However, a couple weeks ago, I noticed the frogbit was suddenly turning brown. It wasn't a dying leaf brown, it was a sick leaf brown. I threw out all of the frogbit plants that looked like they'd been infected (about half of my frogbit) and figured it was over. The following week, when I did my water change, I noticed that this strange sickness/disease was affecting my trident java fern as well. Not only that, but the java fern went from relatively healthy to icky brown in a week. I ended up throwing all of it out as well because the sickness was affecting even the rhizomes. When I cleaned the tank yesterday, I ended up having to trim all the leaves off of my bolbitis heudelotti plant (previously about the size of a volleyball) and have had to remove some leaves from some baby amazon swords. I have noticed that my anubias plants suddenly have holes in the leaves, though I can't say if it is related. I don't have any pictures because I honestly wasn't expecting it to spread like it has... Can anyone make a guess as to what I might be dealing with and how best to treat it?

Tank parameters:
55g freshwater tank with an HOB filter and a sponge filter
Tank temperature steady at 80*F
40% weekly water changes
1x55W t5ho light on for 4 hours, off for 2, on for 4 hours

Tank inhabitants:
5 pearl gourami
2 bolivian rams
1 red wag platy
9 cardinal tetras
1 oto (the only one of 7 or 8 that survived a full year in the tank)
MTS

Plants:
1 amazon sword that recently sent up a shoot, which now has 3 babies growing on it
1 bolbitis heudelotti
a couple rhizomes of needle leaf java fern
1 small rhizome of narrow leaf java fern
1 crinum calamistratum
1 crinum natans
1 moss ball
2 stems water wisteria
lots of italian vals
2 anubias nana
1 anubias nana var petite

plants that have been 100% loss
frogbit
trident java fern
java fern windelov
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post #2 of 6 (permalink) Old 04-10-2013, 04:10 PM
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Do you dose any nutrients for your plants? Have you done any basic water testing (NO3/PO4/pH/kH/NH4)?

It is possible that after a growth spurt your tank is now void of nutrients. This will affect first those plants that don't get nutrients from the substrate.


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post #3 of 6 (permalink) Old 04-10-2013, 04:14 PM
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Holes in the Anubias leaves usually means a lack of nutrients.

My roommate says I'll die by giant turtle.
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post #4 of 6 (permalink) Old 04-10-2013, 05:03 PM
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That looks like a major nutrient's deficiency to me too. Probably one or more of the macro-nutrients (N-P-K) are missing.

Plants and algae grower.
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post #5 of 6 (permalink) Old 04-10-2013, 05:40 PM Thread Starter
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I have been dosing seachem flourish (NOT excel) once a week. Maybe I should aim for twice a week?
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post #6 of 6 (permalink) Old 04-10-2013, 05:44 PM
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Flourish is just micros I think. You need to hit the macros nitrogen, phosphorus and potassium. You can get those from seachem, but dry ferts are way more cost effective.

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