When should I feed my plant cal-mag?

[OMGReptar]

Hi all! I’m currently on day 17 and I just up-potted into a 1 gallon pot. I’ve been using Happy Frog soil and watering with tap water the entire time (I do have what’s considered “hard water”). I haven’t introduced any nutrients yet, but I was wondering if I need to introduce cal-mag soon. What is the general procedure to follow? Thanks!

 

[013]

Yes, add cal-mag. read directions on your bottle think mine is 1 mil per gallon but yours could be different. You can mix less than a gallon too so it’s not wasted. If your water is hard then you should let it sit out for 24 hours to off gas the chlorine and chloramine. Many of us use mosquito dunks or mosquito bits either mixed in soil or top dressed or in water to introduce BT bacilluss theringnesis a beneficial biological to kill pests. The ratio is 1/4 dunk per 5 gallons of water

1 ml equals 20 drops
so if your cal-mag mixing calls for 1ml per gallon
it can be reduced to 10 drops or .5 ml per half gallon
or 5 drops per quart