Onion plant with red patches

Coler

AC Members
Jan 30, 2007
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What do you planty types make of an Onion plant which has a couple red blotches on it, at the edges of the leaves - really looks vivid, like it was bleeding. New in my tank for a week or so, planted in crushed coral substrate, left plenty of the bulb exposed.

50 watt lighting, 180L tank...about 12 or 13 inches deep from memory, lights are on 8 hourse, tank does not receive natural light to any extent otherwise. I put in some API general plant fert once a week.
 
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