Not much there.

Best to get a bag of all-purpose veggie fert on sale. All kinds work if you follow the directons.

That is very weak fertilizer. It would probably be good for plant seedlings but not much else.

Here is a link that might be useful: Watch Me Grow A Giant Pumpkin

It sounds like one of the many micro-nutrient solutions available on the market so yes, just as with any of the basic N-P-K fertilizers, it has it's place IF your soil is deficient in the micro-nutrients (boron, zinc, magnesium, etc.) or if your plants show the signs of any of these deficiencies.

Many times it is the micros that give a plant that finishing touch of health and productivity and help them overcome stress caused by weather, pests, and transplanting. It can benefit vegetables as well as flowers. So feel free to use it in your garden following label directions, but don't count on this as your primary source of nutrients.

Dave

I think it is telling that the only ingredient over 0.37% concentration is CHLORINE. Last I checked, chlorine is not an essential nutrient for anything living.

I have planted aquariums too, and Seachem's Flourish is for traces, not NPK. So if you think your garden is low on trace minerals, then it might be worthwhile. But most garden fertilizers are for nitrogen, phosphorus and potassium (NPK).

So, how big's your tank(s)?