Vaughn, many thanks.

I believe EI recommendations are 1/4 tsp GH booster for 10-20 gal, and 1/2 tsp for 20-40 gal.

Since as my post I have just begun adding GH booster, is it common (and safe) to add so much more than EI guidelines? A tablespoon isn't even recommended for 125 gal. Not that you recommended that for my tank, but seems way overkill.

Just trying to figure out what I should be doing re: GH booster.