11-28-2009, 11:33 AM
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Originally Posted by stephanieleah
Byron do you follow the dosage on the label of the Floruish Comprehensive? If not, what dosage would you recommend (let's say for a thirty gallon tank?). Does fertilizer work if I am not adding CO2?
Yes, plants need nutrients; nutrients include CO2, nitrogen and minerals. The CO2 comes from the fish and biological actions, as does the nitrogen (ammonia/ammonium from fish etc). Tap water and fish food contain some of the minerals but not all, so liquid fertilizer ensures everything needed is there. But it can't be in excess.
Follow the label instructions. Don't overdose, algae will blossom if the plants cannot use the nutrients, and CO2 will then be the limiting factor which is not good. Keeping it balanced is the key.
I worked out the dose for my large tanks, it is one half-teaspoon per 30 gallons, so in your 30g tank no more than a half teaspoon of Flourish once a week. Observe the plant growth/response, and after a couple weeks if they look like they need more, do a second dose 3-4 days after the first (which should be after the weekly partial water change). Observe the plants. It takes a bit of experimenting to find the balance that will give good plant growth and not cause algae to overtake the tank. And by good growth, I mean the leaves are nice and green, new leaves appearing on plants, etc. Growth may be slow but steady. This plus light for 10-12 hours a day should work.