(1 customer review)


Stimulates flower production during all stages of bloom. 4-18-38 is rich in Potassium, includes Micronutrients and makes a great All Purpose Hydroponic Bloom Formula.

Not Avail in California


Product form:

Dry powder, water soluble

NPK analysis:


Product designation:

Standard (This means products may contain natural compounds as well as synthetic compounds popular in conventional agriculture.)

Other product highlights:

Large amount of potassium to support flowering and fruit.

Well suited for:

Hydroponics, soil and soil-less.

Primary function/use:

Multi-use fertilizer containing micro and macro-nutrients designed to produce large fruits, flowers and vegetables.

When and where to use:

When flowering or fruiting sites appear.


Ensure bag is properly sealed and stored in cool, dry, dark place.

For hydroponics, soil and soil-less:

Mix one (1) tsp. with one (1) gallon of water.
For larger batches, mix 1/2 lb. with 50 gallons of water.

Additional information

Weight N/A

1 review for 4-18-38

  1. E.G.

    This is an excellent product. I have used it for several years and continue to have great success!

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