Hey guys, im from India and the only product available for po4 removal is phosguard. I know and iv read amny forums and issues about aluminium leaching... seachem states that at ph above 8, leaching aluminium wont be an issue. Many have been using phosguard in mixed reef setups without any issue... what about matrix carbon? Is that good too? Im not intrested in seagel coz id rather used them seperately instead of mixing. Would like to know about the experiences if any1s using them successfully in mixed reefs.