too much light?

RockabillyChick · 01-28-2006, 11:59 AM

can low-light plants like crypts get too much light? i have a 10 gallon with 3w/g (two 18" flourecent bulbs) and my crypts are turning yellow. they started turning yellow when i only had one bulb on the tank, and i thought they weren't getting enough light, so i added another, but they're not greening up. should i add Flourish Excell? i don't want to resort to a CO2 system. just seems like too much work. i heard that flourish excell will provide carbon to the plants instead, as well as other nutrients.

**Damon** · 01-30-2006, 06:53 AM

They can get too much light but that is not the case here. CO2 is adding to the problem but not the underlying factor. Have you moved them recently? Are the old leaves turning yellow? Are the veins still green? If I had to guess, I'd say you are lacking potassium. A pic would be wonderful. I would get some flourish and flourish excel. Tropica's mastergrow is wonderful also and a great alternative to flourish. You'll still want the excel in either case.

RockabillyChick · 01-30-2006, 12:52 PM

i haven't moved them since i first put them in there. i know crypts have a tendancy to "melt" when they're moved, but mine never did. they lost a couple of the outer leaves, but thats normal.

no, its the new inner leaves that are coming out yellow. i don't know what the potassium levels are in the tank though. but the water where i live comes from an aquifer, so its very mineral-rich.

01-28-2006, 11:59 AM	#1
RockabillyChick Senior Member Join Date: Nov 2005 Age: 22 Posts: 298	too much light? can low-light plants like crypts get too much light? i have a 10 gallon with 3w/g (two 18" flourecent bulbs) and my crypts are turning yellow. they started turning yellow when i only had one bulb on the tank, and i thought they weren't getting enough light, so i added another, but they're not greening up. should i add Flourish Excell? i don't want to resort to a CO2 system. just seems like too much work. i heard that flourish excell will provide carbon to the plants instead, as well as other nutrients. __________________ She does nothing to deserve it He only wants to observe it We sit back like they taught us We keep quiet like they taught us He just wants, he wants to prove it She does nothing to remove it We don't want anyone to mind us So we play the roles that they assigned us She does nothing to conceal it He touches her 'cause he wants to feel it We blame her for being there But we are all guilty http://rockabillychick.deviantart.com/

01-30-2006, 06:53 AM	#2
Damon Aquatic Naturalist Join Date: Jan 2005 Location: Dayton, Ohio Age: 32 Posts: 14,982	They can get too much light but that is not the case here. CO2 is adding to the problem but not the underlying factor. Have you moved them recently? Are the old leaves turning yellow? Are the veins still green? If I had to guess, I'd say you are lacking potassium. A pic would be wonderful. I would get some flourish and flourish excel. Tropica's mastergrow is wonderful also and a great alternative to flourish. You'll still want the excel in either case. __________________ For in much wisdom [is] much grief: and he that increaseth knowledge increaseth sorrow. Member of the AGA (Aquatic Gardner's Association) Member of the IBC (International Betta Congress)

01-30-2006, 12:52 PM	#3
RockabillyChick Senior Member Join Date: Nov 2005 Age: 22 Posts: 298	i haven't moved them since i first put them in there. i know crypts have a tendancy to "melt" when they're moved, but mine never did. they lost a couple of the outer leaves, but thats normal. no, its the new inner leaves that are coming out yellow. i don't know what the potassium levels are in the tank though. but the water where i live comes from an aquifer, so its very mineral-rich. __________________ She does nothing to deserve it He only wants to observe it We sit back like they taught us We keep quiet like they taught us He just wants, he wants to prove it She does nothing to remove it We don't want anyone to mind us So we play the roles that they assigned us She does nothing to conceal it He touches her 'cause he wants to feel it We blame her for being there But we are all guilty http://rockabillychick.deviantart.com/

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