Hi,so my system is 240 liters fish only tank and it's running for about 8 years.Those years the levels in my system was very high so 4 months ago i decided to go for corals so i started making my levels right.My nitrates was 80ppm and now it's 5 but i have big problem with phosphates. 3 weeks go i added phosguard and they reduced a little bit,they went from 1ppm almost to 0.5ppm.But due to my heavy feeding lately they came back up to 1ppm.My lfs said to me to buy the microbacter clean in order to repopulate my bacterias because these 8 years of not proper maintenance the live rock is probably filled with trash etc and it's not able for the bacterias to make their nutrition cycle.So my question is should i add the microbacter clean in order to reduce some phosphates or should i keep with phosguard???