Is Drip Hydro Flex PK Booster a complete fertilizer?

No. It is a 0-10-10 bloom supplement with no nitrogen, calcium or magnesium. Keep using a base nutrient and add this during flowering and fruiting.

When should I use it?

Use it in the flowering and fruiting stage, typically from early bloom through ripening. It is not meant for seedlings or vegetative growth.

Does it work in hydroponics and coco?

Yes. It is labeled for any growing medium, including hydro and coco. Coco and RO-water growers should still add a cal-mag source.

What sizes does it come in?

1 quart, 2.5 gallons, 55 gallons and 330 gallons. The 1-quart bottle is the common home-grow size.

Is it the same as a PK 13/14 booster?

No. This is 0-10-10, so it is lower in phosphorus and potassium than a 13/14 product. Dose it according to its own label rather than a 13/14 schedule.

The best new price seen is $20.97 at Home Depot as of November 7, 2026. Check the price history before buying, since only 2 stores list it new.

Where is the Drip Hydro Flex PK Booster cheapest?

At Home Depot, for $20.97, as of our latest check.

What do buyers say about the Drip Hydro Flex PK Booster?

Rated 4.8 out of 5 from 18 ratings.

Where can I buy the Drip Hydro Flex PK Booster?

4 stores we checked sell it, including Home Depot, Tractor Supply Company, GrowGeneration, Modern Farms.

Browse

Drip Hydro Flex PK Booster

Best price now

$20.97at Home DepotObserved at 10:33 PM

Compared across 2 stores. Prices are checked against each store and labelled with when.

Visit Home Depot

Drip Hydro Flex PK Booster

Best price now

$20.97at Home DepotObserved at 10:33 PM

Compared across 2 stores. Prices are checked against each store and labelled with when.

Visit Home Depot

Ask our agent about this product

It checks today's price at every store, compares the alternatives and answers in about a minute.

Our take on the Drip Hydro Flex PK Booster

Drip Hydro Flex PK Booster is a liquid bloom booster with an NPK ratio of 0-10-10, built around phosphorus and potassium plus chelated zinc and manganese. It carries no nitrogen, so it is meant for the flowering and fruiting stage rather than vegetative growth, and it is free of potassium chloride. It works in any growing medium and comes in sizes from 1 quart up to 55 and 330 gallons. The best new price is $20.97 at Home Depot as of November 7, 2026, with 2 stores pricing it new.

Best forGrowers pushing flower and fruit size in late bloomCoco, soil and hydro setups that need a nitrogen-free PK hitCommercial or large-scale growers buying 55 or 330 gallon drumsAnyone avoiding chloride-based potassium sources

Pros

Nitrogen-free 0-10-10 formula targets bloom and fruit set without pushing leaf growth
Chelated zinc and manganese stay available across a wide pH range
Free of potassium chloride, a plus for growers watching salt and chloride buildup
Liquid concentrate mixes easily and suits any growing medium
Bulk sizes up to 330 gallons for large operations

Cons

Not a standalone feed: plants still need nitrogen and calcium through bloom
High phosphorus can lock out micronutrients if overused or dosed carelessly
No calcium or magnesium, so coco and RO-water growers need a separate source
Small 1-quart bottle goes fast at full bloom strength

Drip Hydro Flex PK Booster prices at every store

Home DepotNew
In stock
$20.97Observed at 10:33 PM
Visit Home Depot
Tractor Supply CompanyNew
In stock
$22.99Observed at 10:33 PM
Visit Tractor Supply Company

Also available at

GrowGenerationCheck price at GrowGeneration
Modern FarmsCheck price at Modern Farms

Drip Hydro Flex PK Booster price history

Lowest price we've seen: $11.00 on Nov 7 at GrowGeneration. Tracked across 4 stores since Nov 7.

What reviewers say

4.8 / 518 ratings

Only 18 ratings so far, but they average 4.8 out of 5. Buyers describe it as a clean, easy-mixing bloom booster that does what a PK supplement should.

What people mention

MixingPraisedBuyers say it dissolves cleanly in water without fallout or clogging drippers.
Bloom resultsPraisedUsers report denser flowers and better fruit set after adding it in late bloom.
DosingMixedSome find the label rate strong and cut it back to avoid overfeeding.
FormulaPraisedThe chloride-free potassium source and chelated micronutrients get positive mention.

Specifications

Type: Supplement
Primary Use: Fertilizer
Soil Type: Any growing medium
Form: Liquid
NPK Ratio: 0-10-10
Micronutrients: chelated Zinc, chelated Manganese
Quantity: 1 Quart
Size

Questions and answers

Is Drip Hydro Flex PK Booster a complete fertilizer?: No. It is a 0-10-10 bloom supplement with no nitrogen, calcium or magnesium. Keep using a base nutrient and add this during flowering and fruiting.
When should I use it?: Use it in the flowering and fruiting stage, typically from early bloom through ripening. It is not meant for seedlings or vegetative growth.
Does it work in hydroponics and coco?: Yes. It is labeled for any growing medium, including hydro and coco. Coco and RO-water growers should still add a cal-mag source.
What sizes does it come in?: 1 quart, 2.5 gallons, 55 gallons and 330 gallons. The 1-quart bottle is the common home-grow size.
Is it the same as a PK 13/14 booster?: No. This is 0-10-10, so it is lower in phosphorus and potassium than a 13/14 product. Dose it according to its own label rather than a 13/14 schedule.
When is it cheapest?: The best new price seen is $20.97 at Home Depot as of November 7, 2026. Check the price history before buying, since only 2 stores list it new.
Where is the Drip Hydro Flex PK Booster cheapest?: At Home Depot, for $20.97, as of our latest check.
What do buyers say about the Drip Hydro Flex PK Booster?: Rated 4.8 out of 5 from 18 ratings.
Where can I buy the Drip Hydro Flex PK Booster?: 4 stores we checked sell it, including Home Depot, Tractor Supply Company, GrowGeneration, Modern Farms.

Stores we've priced the Drip Hydro Flex PK Booster at

Quart, 2.5 Gallon, 330 Gallon, 55 Gallon

Active Ingredients

Potassium, Phosphorus

Ingredients

chelated Zinc, chelated Manganese, Phosphorus, Potassium

Item Volume

1 Quart

Item Weight

1.000000

Dimensions

select option (width), select option (height), select option (length)

Container Size

55 Gallon

Effect Highlights

Booster

Packaging Size

1 Quart

Suitable Plant Type

Fruit-producing plants, Flower-producing plants

Typical Users

ADULT

Free Of

Potassium chloride