thank you for all the replies. they all helped. my Water Sprite aquatic plant is rapidly growing and i have put peat moss into the filter. I also tested about 3 gallons of rainwater and it was perfect so i replaced some of that into my fish tank. The ph and the alkalinity and all the other chemical readings are all now normal. lets just hope it stays that way =D

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55gallon
Light - 6500K CFL, 23wattsx5 5hr/day
Substrate - Red Mexican Clay, Sphagnum Peat moss, Eco-Complete
Misc- Pressurized CO2, EI Dose KNO3, KH2PO4, CSM-B
Plants -Limnophila Aromatica, Stargrass, Dwarf Hair Grass, Christmas Moss, Baby Tears (HM), Dwarf Baby Tears(HC), Rotala Rotundifolia, Ludwigia Glandulosa, Riccia Fluitans