03-03-2011, 03:12 PM
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Originally Posted by migdem
what is a good floating plant that stands soft water and low ph?
About ferts can i use seachem flourish only?
The vast majority of aquarium plants occur in soft, slightly acidic water in nature, so you have an almost endless option for plants. One of the very best is Ceratopteris cornuta [click on the name, it is in our profiles]. Frogbit is rarer but another one. Several stem plants do well floating; I personally like Brazilian Pennywort, I use it like this and it is superb. Duckweed of course, when all else fails--nothing will kill or stop this plant
. But it has little "character" so I would look for the others. Something similar but much nicer as a plant is Salvinia. I haven't got this in the profiles yet.
The second question is harder to answer. It's all about that balance. If the CO2 is sufficient to really "feed" the plants, and the light too, then nutrients will be required more often. Flourish is intended as a stand-alone once or twice weekly fertilizer for low-tech systems, though Seachem do suggest using it along with their other products (iron, potassium, nitrogen, whatever). One has to be careful about dosing ad hoc nutrients. I don't know how Flourish performs if used more often, say daily. It would be expensive though. But again, it depends upon the amount of CO2 actually getting assimilated into the plants.