I've been trying to get my 75 gallon tank going.. But everything looks like crap!! My downoi seems to be doing OK, my dhg isn't doing anything... my tom Barr s repens are looking like crap..wisteria is growing slowly.. cardinalis is melting..ludwgia sp red is in limbo..bacomba sp japan died, rotala is best thing growing...green dust algae is still winning..this Is killing me..pressurized co2... osmocote tabs thru out tank, ei ferts,7 hrs of light and co2 drop checker showing perfect co2. What could be the problem???