I have an extra Kent dosing containers and was going to start dripping vinegar to get my Nitrates and phos under control. Been fighting it for years with no undetectable readings. Been reading alot about vinegar thanks to Randy. I have a 125g tank with a 20g sump and a 29g refug. Nitrates usually at 50-60 and phos are high too. What do you recommend the drips per sec on this?