Question about N-P-K - should I be using it? - The Planted Tank Forum
 
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post #1 of 9 (permalink) Old 10-29-2012, 05:04 PM Thread Starter
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Question about N-P-K - should I be using it?

I have a 10 gallon planted tank. kGH is 5 or 6. I have been dosing Seachem Flourish Comprehensive with Equilibrium to get GH up to 5. Should I also be dosing N-P-K? What do you use?

Thanks for the help.
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post #2 of 9 (permalink) Old 10-29-2012, 06:44 PM
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What type of lighting is on the tank? Is there co2 injection?

15g Fluval Flex - Will be a planted shrimp tank
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post #3 of 9 (permalink) Old 10-29-2012, 06:59 PM Thread Starter
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Originally Posted by xxUnRaTeDxxRkOxx View Post
What type of lighting is on the tank? Is there co2 injection?
I have two 13w Compact Fluorescent Lights in metal reflectors sitting on top of the tank. They're a lot brighter (like twice as bright at least) than the T8 15w I used to use. No CO2 injection.
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post #4 of 9 (permalink) Old 10-29-2012, 10:51 PM
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Then there's no real reason to use any kind of fertilizers in my opinion...

15g Fluval Flex - Will be a planted shrimp tank
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post #5 of 9 (permalink) Old 10-30-2012, 12:46 AM Thread Starter
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You didn't ask me what the substrate is. I'm not particularly happy with it - too big gravel. Have to do something for the plants.
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post #6 of 9 (permalink) Old 10-30-2012, 12:52 AM
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Are these 6500k bulbs or regular white ones?26watts over a 10 gallon would be considered high light. You'll be running into algae problems if plant density is insufficient or lack of carbon dosing or co2. I'm sure many of the expers here would have more to add.


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post #7 of 9 (permalink) Old 10-30-2012, 04:48 AM
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If you are using screw-in spiral CFL bulbs, vertical, in dome type reflectors, 2 - 13 watt bulbs probably isn't high light. If the bulbs are horizontal, and in a standard, no reflector light hood, you probably don't have enough light.

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post #8 of 9 (permalink) Old 10-30-2012, 05:28 AM Thread Starter
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If you are using screw-in spiral CFL bulbs, vertical, in dome type reflectors, 2 - 13 watt bulbs probably isn't high light. If the bulbs are horizontal, and in a standard, no reflector light hood, you probably don't have enough light.
These are screw-in spiral CFL bulbs, vertical, in dome type reflectors, 2 - 13 watt bulbs.
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post #9 of 9 (permalink) Old 10-30-2012, 06:58 AM Thread Starter
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See, the thing is, I read and confirmed on the Seachem site that Flourish Comprehensive has only micros, and read elsewhere that macros are also necessary. I haven't seen any signs of lack of fertilizers but the plants haven't been doing much and are just now starting to grow again. I was dosing too much Flourish Comprehensive for a number of weeks, realized it, and started doing 50% water changes. This is why I'm asking about NPK.
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