I've had similiar problems with a 90 gal setup. It started to clear after about 3 weeks. I made the mistake of trimming back some plants and replanting them. Made a mess of things and wound up with hazy water again. I took my Magnum 350 that I bought for polishing, put in the micron filter with a half cup of diatom powder and ran in 24/7. In 48 hrs I had crystal clear water. I just need to be careful to make sure I check the filter often, as it tends to clog quickly. Running 4 days now with little loss of output.