I tell you this has been the hardest hoby yet one of the most enjoyable! I have a 55 gallon tank with a coralife 260 watt light(currently only running 130 watts) magnum canister for my external co2 regulator,co2 with ph meter, medium gravel with laterite, a emperor 400 with a phosphate removing pad as my discus eats ALOT , and I still grow some mean algea. My ph unareated out of the tap is around 8.2 with CO2 around 7.2. My water is so hard I quit counting drops on the tetra test and I dose Nitrates to 10 ppm and with water changes keep phosphates down to 2ppm. I also dose potasium sulfate( 1 tablespoon a week) and 5ml of flourish every other day or so. Plants are Moneywort, some strain of red rotalla,a dwarf sag clump, a couple of sprites of some sort, Some hairgrass, an anubius and a couple of swords. I have yet to learn all of the plants by their true name and am certain I am misidentifying some as I go. The problem is that after 3 months of co2 and trial and error I still see really stunted growth. The area I am in sells little in the way of plant supplies and sometimes the more I read the more confused I am. What am I missing? Should I try the pmdd and does that aleviate the many different fertilizings or should I continue what I am doing? I guess I just need a mentor lol. Can someone also explain simply the pmdd as I see there are variations,some with traces and some without, some use different doses. Thanks for the ear and I look forward to the advice Rich.