I had the regular 24-8-16 stuff for the last 2 years and used it 1/4 strength on the seedlings. I used the bloom booster 15-30-15 at 1/2 strength on the plants once outside last year. I'm out of both and don;t want to have to buy both types so will the bloom booster 15-30-15 at 1/4 strength work ok on the seedlings? Will the high potassium harm them?