ISN Seaweed is a mix of North Atlantic and Pacific Ocean marine plants. ISN seaweed is one of the few products in the world that has a cold pressed refinement process which provides a rich source of natural enzymes, minerals, hormones, soluble carbon, sugars, organic vitamins, minerals and over 65 natural amino acids to your plant. Designed specifically for hydroponic systems, ISN Seaweed enhances root development and plant growth by increasing the organic building blocks in the root zone.
ISN Seaweed is a mix of North Atlantic and Pacific Ocean marine plants. ISN seaweed is one of the few products in the world that has a cold pressed refinement process which provides a rich source of natural enzymes, minerals, hormones, soluble carbon, sugars, organic vitamins, minerals and over 65 natural amino acids to your plant. Designed specifically for hydroponic systems, ISN Seaweed enhances root development and plant growth by increasing the organic building blocks in the root zone.
in 12 offers
The lowest price for Isn Seaweed 1L | Hydroponics - Aqua Gardening right now is $20.00 at Epping Hydroponics, compared across 12 retailers.
The all-time low was $19.00 on 7 June 2025 — today's price is 5% above the lowest ever. This is at or near its all-time low — a good time to buy.
Prices last updated 23 Oct 2026.
Isn Seaweed 1L | Hydroponics - Aqua Gardening
ISN Seaweed is a mix of North Atlantic and Pacific Ocean marine plants. ISN seaweed is one of the few products in the world that has a cold pressed refinement process which provides a rich source of natural enzymes, minerals, hormones, soluble carbon, sugars, organic vitamins, minerals and over 65 natural amino acids to your plant. Designed specifically for hydroponic systems, ISN Seaweed enhances root development and plant growth by increasing the organic building blocks in the root zone.
ISN Seaweed is a mix of North Atlantic and Pacific Ocean marine plants. ISN seaweed is one of the few products in the world that has a cold pressed refinement process which provides a rich source of natural enzymes, minerals, hormones, soluble carbon, sugars, organic vitamins, minerals and over 65 natural amino acids to your plant. Designed specifically for hydroponic systems, ISN Seaweed enhances root development and plant growth by increasing the organic building blocks in the root zone.
Last updated at 23/10/2026 08:37:10
ISN Seaweed - 1L
ISN Seaweed, 1L
Delivery $14.95
Isn Hydroponic Seaweed Additive 1l Brand +free Shipping+
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
ISN Seaweed 1L - Plant Nutrient Additive
Delivery between 28 Oct – 4 Nov $13.25
ISN Seaweed
Delivery between 3–5 Nov $5.25
ISN Seaweed - 1L
ISN Seaweed 1L
ISN Seaweed (1, 5 or 20L) 1L
Delivery between Tue – Thu $14.95
ISN Seaweed | 1L
Delivery between 29 Oct – 5 Nov $15
Unlock Plant Vitality with ISN Seaweed Extract
| Primary Use | Fertilizer |
| Item Volume | 1 L |
| Suitable Plant Type | Vegetables, Flowers |
| Top Use Cases | Vegetable Gardeners, Cannabis Cultivators, Hydroponic Growers |
ISN Seaweed - 1L
ISN Seaweed, 1L
Delivery $14.95
Isn Hydroponic Seaweed Additive 1l Brand +free Shipping+
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
ISN Seaweed 1L - Plant Nutrient Additive
Delivery between 28 Oct – 4 Nov $13.25
ISN Seaweed
Delivery between 3–5 Nov $5.25
| Primary Use | Fertilizer |
| Item Volume | 1 L |
| Suitable Plant Type | Vegetables, Flowers |
| Top Use Cases | Vegetable Gardeners, Cannabis Cultivators, Hydroponic Growers |
