No need go so low. 1.010-1.013 would be what I recommend. Anything below 1.010 long term is not good for the fish. Fish should be dunked straight into hypo, provided pH matches. This is what causes parasites to fall off due to osmotic shock. Acclimatizing them to lower salinity defeats the purpose. It's only when raising the sg back up that you need to do it slowly, although some fish like clownfish can go from 1.010 to 1.020+ within a day without any issues. Skimmers work at 1.010, tried and tested. Will pass you my 9W UV, should be better than not using any. Must show that it is possible to have an "ichless" tank!