Need help with diy 2 part. Also has anyone had success with this?

[corpusse]

The reef crest brand J&L sells is just over $3 a gallon. Given your current needs that would work out to about $3 a month (you need calcium and alk). I think it's even cheaper if buy the larger brs style containers. Considering my needs I buy the pre portioned ones just because it's easier and isn't costing me more then a couple of bucks a month.