Alternanthera reineckii question

AquariArt

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May 2, 2008
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I purchased a pot of Alternanthera reineckii ''roseafolia'' three weeks ago. I removed it from the pot, removed the fibrous material from around the roots and planted it in 2.5" of flourite with an API tab about 2" away from the root system. I have 2 WPG with lights on 10 - 11 hours a day, no CO2 so I add half a dose of Flourish excel every other day and Flourish once a week with a 25% water change. PH is 6.7 and temperature is 80 degrees F. The plant is growing (almost 3 " in three weeks) and has a nice red color, but is literally riddled with holes.

The holes are probably from my fish. The fish that graze on the plants are, three Ottocinclus, three SAEs, two 2" Clown Loach, one 2" Burmese Border Loach, and one 2" Bristlenose Pleco. I have a heavily planted tank and all my other plants are fine. Does anyone else have trouble maintaining this particular plant? Any recommendations? Do you know of any other plants with red foliage that are hardier? I have a Red Melon and Rubin Sword that are growing well, but do not have a very strong red coloration.
 
Alternathera is best suited to high light/CO2 and heavy nutrients. The holes are probably K deficiency.
 
I just noticed my Peacock Moss is not doing so well either! I began using an Eheim Canister Filter a couple weeks ago that had a carbon filter in it. Could that have effected my nutrient level? I did remove the carbon filter after 8 days. Currently almost no reading of ammonia, 3.0 nitrates. Any recommendations on what else to check for.
 
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Carbon filtration adsorbs very little nutrients, it won't impact nutrient dosing.

You're only dosing Flourish (mostly micro nutrients) and Flourish Excel (carbon), which only accounts for some of the nutrients necessary. Also get the Flourish NPK kit (Nitrogen, Phosphorus, and Potassium) to give the plants the macro nutrients it needs. At your light level I would also increase the Flourish dosing to twice a week, same goes for NPK dosing.
 
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