I have 55g FW aquarium and removed the plastic plants and planted the real McCoys. I have learned a lot by reading various articles at this site and referenced articles. My aquarium is over a year old and I have 11 fish all growing well(3-koi angels, 2-congo tetras, 1 flagtail, cory, and african knife, & 3-red rainbows). My plants c/o 3 amazon swords, 4 javas growing on Malaysian driftwood, 2 apon. 1 ludwigia,, 2 hygrophilia & Italian vallisneria, and 4 anubias. My lighting is a 192 jbj system and my substrate is 60/40 gravel/eco-complete mix. Immediately I saw nutritional deficits in my swords. They developed pin holes which expanded and the older leaves had yellow areas, consistent with what I believe is a potassium deficiency. I did more reading and discovered that my softner although lowering my GH from 200 to 20 was also replacing all minerals in my county water with sodium/chloride and thus starving my plants. Questions: #1- Should I forget the softner all together? My raw water's pH is ~7.2 ,KH~160 and GH ~200. I have already bought flourish and given my lighting at almost 4watts/g, I am thinking of adding co2 either bought or a DIY. I want my plants to thrive. I just bought a fluval 304-not set up yet- and I guess I can play with the filter media (ie peat) to soften the water( that"s why I used the driftwood). Question #2- Which is better for the plants(and fish), Soft water with minerals and K added or Hard water with similar minerals added? Question #3- Do the experts use carbon in their filtration systems when growing aqautic plants? P.S. I would like to keep this simple if possible.
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