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Old 12-13-2013, 11:31 AM   #1 (permalink)
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Default Ludwigia Red

Hi, I have been having this issue with this plant all the time. My tank temp is about 75F, and medium light, co2, and dosing remain the same. For some unknown reason, a few Ludwigia Red will start melting while all the plants are growing well and healthy. Does anyone know why?
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Old 12-14-2013, 02:47 AM   #2 (permalink)
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Default Re: Ludwigia Red

Probably it needs more CO2 than the others. Or perhaps flow is too little around the ludwigia
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Old 12-16-2013, 12:34 AM   #3 (permalink)
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Default Re: Ludwigia Red

It is hard to say like this, could be any kind of problem that Ludwigia is more sensitive of. Too soft water maybe (I think Ludwigia is more a medium-hard water plant)?
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Old 12-16-2013, 01:34 AM   #4 (permalink)
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Default Re: Ludwigia Red

Although maybe they do occur more in harder water, I never had any problems with ludwigia in soft water. Melting is something I really associate with too little CO2 compared to the amount of light. Upping the amount of CO2 and/or flow always stopped the melting in my tanks.
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Old 12-23-2013, 10:20 AM   #5 (permalink)
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Default Re: Ludwigia Red

I am having a similar problem with mine. I have a tank full of plants, all doing really well, except my Ludwigia. I would not say its melting, but it is developing holes in its leaves and has not grown since I bought it a year ago. Infact it is a lot smaller now than when it was shipped to me.
I read up on plant inflictions and it "seems" to be low K. My water is fairly hard (~8-10 dK) and Ive been dosing KNO2, K2PO4 and KSO4 so I think I got the K covered.
I have tried to suppliment CO2 with Flourish, but it made the water cloudy with no improvemt to any plants, not to menting my Ludwigia.
I also started using root tabs. My L. aromatica and another large plant, (unsure the name. Sagitium or something like that,) are now taking over my tank and this Ludwigia will be chocked out if it does not start growing

Edit
The name of the large plant isnt a sagittaria, its actually a Cryptocoryne wendtii. Bought it many years ago and survived several die outs and neglect for 2 years

Last edited by sonvar; 12-24-2013 at 06:46 AM..
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Old 12-23-2013, 10:27 AM   #6 (permalink)
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Default Re: Ludwigia Red

Do you know your PO4? Have you tried increasing PO4? On internet you read all about low K to solve those small pinholes. But with 100ppm K those pinholes always stay. With more PO4 I solved them many times. I'm curious to know whether this works for you too.
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Old 12-24-2013, 06:05 AM   #7 (permalink)
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Default Re: Ludwigia Red

I dont have a tester for PO4, my LFS does not carry them and for some reason have not got around to pushing the "purchase item" button online to get one. Been guessing by using a reduced EI dosing, measuring NO3 as a guide.
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Old 12-24-2013, 10:25 AM   #8 (permalink)
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Default Re: Ludwigia Red

Try increasing it
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Old 12-24-2013, 10:42 AM   #9 (permalink)
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Default Re: Ludwigia Red

Ill try that and see what that will do. may need to report back in March when I return from overseas (work)
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Old 01-03-2014, 08:47 PM   #10 (permalink)
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Default Re: Ludwigia Red

Quote:
Originally Posted by ryu1 View Post
Hi, I have been having this issue with this plant all the time. My tank temp is about 75F, and medium light, co2, and dosing remain the same. For some unknown reason, a few Ludwigia Red will start melting while all the plants are growing well and healthy. Does anyone know why?

i remember I have the same problem last year but I cant remember what caused and remedy I did.

When I encounter problems I always do water changes to reset the tank and fix my dosing, co2, etc.
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