I have had my 75gal setup natural planted for over 6 years and just tore it down a month ago to re-set it up again. Nothing was wrong per se-other than the crypts had taken over and I just wanted a new look for the Angelfish.
The lighting I used and currently use over my 75gal are 3 florescent bulbs-40w 6500k GE brand-On a 12h photoperiod and I change them out every 6mo. I bought one of the double bulb shop lights for 2 bulbs and hung over the tank on chains and used a 48in single light strip to set on top of the tank. All my tanks are open tops for best light penetration to plants.
I grow-a nice lawn in front using E. tenellus (pygmy chain swords
), in the back with 2 different vals and sags, amazon and ozelot sword, bronze crypts and java moss on the tips of the dirftwood. I use several different kinds of stem plants-naja grass, rotala, cabomba, wisteria, giant hygrophillia and willow hygrophillia. Floating plants-water lettuce, frogbit.
I don't use any added ferts or inject CO2-so far I have had to trim plants 3 times due to fast growth and re-plant those cuttings back into the 75gal.
I have never used the LED lights, however, in my research the LED plant lights I would need to support the species of plants in my 75gal was in the thousands and why I still use the florescent.
I stocked the tank with 6 Angelfish, a pair of albino BN plecos, RCS, MTS, pod, ramshorn snails to complete the little ecosystem.
Here is a pic from the first week of setup