Looking for someone with some experience with making Green water

So I need to make green water, due to some unexpected seahorse babies I don't have a lot of time to get a culture up and going. I ordered some online along with some rotifers but I am not sure how long it may last so that being said Miracle Grow is a must but I am not entirely sure how much to add. I've read one article that said a bout 1/2 tsp per gallon and I was wondering if anyone with experience could toss their two cents in. I'm going to experiment a bit with a couple of different cultures but figured I'd ask on here to see if anyone does this or has done this before.

Thanks,

 

Are you using the 2-part fertilizer, with the A and B bottles?

 

Actually just using miracle grow for the first batch. I'll have to look but I know I also have some fertilizer left over from when I had my 55G planted tank, I just bought the stuff in dried form back then.

 

Hmm I've never heard of using Miracle Grow. I used specially formulated fertilizers that come in gallon bottles -- I bought it on an aquaculture site.