StoreDeal.ai store
Shop
  • Deals
  • Deal checker
  • Black Friday
  • Buying guides
  • Brands
  • Stores
Travel
  • Flight deals
  • Hotel deals
Company
  • Research
  • Press
  • Use in AI assistants
  • Contact
  • deal.ai apps
Black Friday 2026
  • Walmart
  • Best Buy
  • Target
  • TVs
  • Laptops
  • Headphones
  • Apple
  • Gaming
  • Vacuums
  • Kitchen
  • Toys
  • Smartwatches
  • Tablets
  • Furniture
  • Mattresses
© Deal.ai Inc.·2222 Ponce de Leon Blvd, Miami, FL 33134·support@deal.ai
TermsPrivacy
Deal.ai
ICL Specialty Fertilizers
ICL Specialty Fertilizers - Peters Professional Hydroponic Finisher 0-15-30 - 25lb (80/PL)

ICL Specialty Fertilizers - Peters Professional Hydroponic Finisher 0-15-30 - 25lb (80/PL)

5(1 rating)

Best price now

$65.64at Custom HydroChecked Nov 11

Compared across 3 stores. Prices are checked against each store and labelled with when.

Visit Custom Hydro

Ask our agent about this product

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

Enter to send, Shift+Enter for a new line

Price facts

  • Last seen at $65.64 at Custom Hydro on Nov 11.
  • Checked at 3 stores.

Our take on the ICL Specialty Fertilizers - Peters Professional Hydroponic Finisher 0-15-30 - 25lb (80/PL)

Peters Professional Hydroponic Finisher 0-15-30 is a no-nitrogen powdered fertilizer for the late flowering and finishing stage. Its 0-15-30 ratio pushes phosphorus and potassium while cutting nitrogen, which helps plants fade naturally and finish ripening. ICL says it is about 25% more concentrated in P, K, Mg and S than competing finishers, so growers use less powder to hit target nutrient levels. It suits hydroponic and fertigation growers who already run a feed program and want a dedicated finisher rather than a general bloom formula.

Best forHydroponic growers in late flowerCoco and rockwool fertigation setupsGrowers who want a nitrogen-free finisherCommercial growers mixing large stock tanks
Pros
  • Zero nitrogen supports a natural fade at the end of the cycle
  • High P and K load targets ripening and bloom weight
  • Extra magnesium and sulfur versus typical finishers
  • More concentrated than rivals, so less powder per tank
  • Anhydrous salts resist caking in storage
Cons
  • Not a standalone feed; needs a base nutrient program
  • High phosphorus runoff is a concern in some regions
  • Powder must be fully dissolved to avoid line clogging
  • Little guidance on the label for dose rates across crops

ICL Specialty Fertilizers - Peters Professional Hydroponic Finisher 0-15-30 - 25lb (80/PL) prices at every store

  • Custom HydroNew

    In stockReturn policy

    $65.64Checked Nov 11
    Visit Custom Hydro
  • Evolve Garden SupplyNew

    In stockReturn policy

    $70.95Checked Nov 11
    Visit Evolve Garden Supply
  • BLACK LABELNew

    In stockReturn policy

    $87.20Checked Nov 11
    Visit BLACK LABEL

About the ICL Specialty Fertilizers - Peters Professional Hydroponic Finisher 0-15-30 - 25lb (80/PL)

It lets growers lower nitrogen levels by 30% and allow for natural fade.

It is 25% more concentrated in phosphorus, potassium, magnesium and sulfur than competing products. This lets plants reach nutrient targets with less fertilizer.

It is made with anhydrous salts of the highest quality, which minimize caking.

Brand
ICL Specialty Fertilizers
Formulation
Peters Professional Hydroponic Finisher 0-15-30
Nitrogen
None (0% N)
Nutrient concentration
25% more concentrated in P, K, Mg and S than the competition
Nitrogen reduction
Allows nitrogen levels to drop by 30%
Size
25 lb

Questions and answers

What is Peters Professional Hydroponic Finisher 0-15-30 used for?
It is a late-stage finisher for flowering and fruiting crops. The zero-nitrogen formula lets you drop nitrogen so plants fade and ripen naturally before harvest.
Can I use it as my only nutrient?
No. It supplies phosphorus, potassium, magnesium and sulfur but no nitrogen, so it is meant to replace or blend with a base feed during the finishing weeks, not to run a whole cycle.
How is it different from a standard bloom fertilizer?
Most bloom formulas still carry some nitrogen. This one has none, and ICL states it is about 25% more concentrated in P, K, Mg and S than competing finishers, so smaller doses reach the same target.
Does it work in coco and rockwool?
Yes. It is designed for hydroponic and fertigation systems, including coco and rockwool, as long as it is fully dissolved before it reaches drippers or lines.
How should I store the powder?
Keep it sealed and dry. The anhydrous salts are chosen to limit caking, but moisture is still the main enemy of any powdered fertilizer.
Where is the ICL Specialty Fertilizers - Peters Professional Hydroponic Finisher 0-15-30 - 25lb (80/PL) cheapest?
At Custom Hydro, for $65.64, as of our latest check.
What do buyers say about the ICL Specialty Fertilizers - Peters Professional Hydroponic Finisher 0-15-30 - 25lb (80/PL)?
Rated 5 out of 5 from 1 ratings.
Where can I buy the ICL Specialty Fertilizers - Peters Professional Hydroponic Finisher 0-15-30 - 25lb (80/PL)?
3 stores we checked sell it, including BLACK LABEL, Custom Hydro, Evolve Garden Supply.

More granular fertilizers

  • P
    Pennington Ironite Mineral Supplement Fertilizer
    Pennington Ironite Mineral Supplement Fertilizer