And it was seachem nourish for the plants along with stress guard after a water change.
Flourish Comprehensive Supplement for the Planted Aquarium [assume this is the one you mean] is fine, just don't overdose. The Stress Guard is very questionable, as are any so-called slime coat restorer/protection. I would myself never use this or anything similar. The less chemicals in the tank water the better for the fish.