– Your Gardens Catch Of The Day – Low smell unlike the competition, use inside with confidence!
Ocean Grown - Fish Hydrolysate is a cold-processed fish hydrolysate made from 100% hydrolysed fish, with an NPK of 2.5:1.5:0.3. It is designed as a liquid plant feed and soil booster for growers who want a fish-based input that supports regular garden, indoor plant and hydroponic feeding routines.
This fish hydrolysate is a practical option for Australian growers looking to feed plants through the soil, as a foliar spray or in hydroponic systems. It is especially useful when you want a liquid fertiliser that contains naturally occurring nutrients, amino acids, vitamins and trace elements from hydrolysed fish.
Cold-processed to help retain major nutrients, vitamins, amino acids and trace elements.
Made from 100% hydrolysed fish.
NPK 2.5:1.5:0.3 for gentle, flexible feeding across a range of garden uses.
Suitable for seedlings, transplanting, indoor plants, lawns, fruiting trees and hydroponics when used as directed.
Formulated with almost zero smell compared to other options on the market, making it easier to use in indoor spaces and grow tents.
Available in multiple sizes to suit trials, small gardens and larger feeding programs.
Best suited to
Living soil and organic-style garden routines.
Indoor plants, houseplants and grow tent feeding programs.
Seedlings and transplanting support when diluted at the recommended rate.
Foliar feeding where a fish-based liquid fertiliser is preferred.
Lawns, fruiting trees and larger garden areas.
Hydroponic systems at the recommended hydroponic dilution rate.
How to use it
Mix Ocean Grown - Fish Hydrolysate with water before applying. It can be used as a soil drench, foliar spray or hydroponic input depending on your setup and plant needs.
Seedlings: 3 ml per litre of water.
Transplanting: 5 ml per litre of water.
Foliar spray: 3 ml per litre of water.
Indoor plants: 5-10 ml per litre of water.
Lawns and fruiting trees: 10 ml per litre of water.
Choose the size based on how often you feed and how many plants you need to cover.
100 ml sample: A good trial size for testing in a small setup.
500 ml: Handy for indoor plants, small gardens and occasional feeding.
1 L: A practical choice for regular use across multiple plants.
5 L: Better suited to larger gardens, lawns or frequent feeding routines. (You may receive 5 x 1L bottles)
20 L: Suited to high-volume use where fish hydrolysate is part of an ongoing program.
Check before buying
Do not apply to stressed or under-watered plants.
Do not apply when temperatures exceed 30°C.
Always test new products on plants before a complete switch.
Store out of reach of pets and children.
Store in a dark, cool environment.
Check the dilution rate for your specific use before mixing.
FAQs
What is fish hydrolysate?
Fish hydrolysate is a liquid fish-based fertiliser made from hydrolysed fish. Ocean Grown - Fish Hydrolysate is cold-processed and contains 100% hydrolysed fish.
For a practical look at using fish hydrolysate alongside other organic compost activators, see our Australian compost starter guide.
For help telling nitrogen-related yellowing from iron or magnesium deficiency, see our yellow-leaf diagnosis guide.
Does it smell?
This product is formulated with a very low smell profile, making it suitable for indoor use when applied as directed. Expect it to smell like a fresh seafood market, as opposed to foul smelling fish emulsions.
Can I use it as a foliar spray?
Yes. The recommended foliar spray rate is 3 ml per litre of water.
Can it be used in hydroponics?
Yes. The recommended hydroponic rate is 3-5 ml per litre of water.
Ocean Grown - Fish Hydrolysate is a flexible liquid fish fertiliser for growers who want a practical hydrolysate option for soil, foliar and hydroponic feeding routines.
Received my bottle the other and have started using it straight away.
Hope to see some results in the near future.
Thanks Matthew! Great to hear you've already put Ocean Grown to work. 🌱 It's still early days, but we're excited for you to see the results over the coming weeks. Thanks for giving it a go, and happy growing! 🙌
P
Penny White
Great product
The fish ahydrolsate is an awesome product , fast acting when required for a boost while dry amendments are breaking down ready for work. I must say the service is always prompt , professional and friendly at Dr. Grrenthumbs and delivery is fast . Thank you Dr. Greenthumbs
Thanks Penny! Love hearing the fish hydrolysate is giving your plants that quick boost while everything else gets going. And cheers for the kind words about the service too, we really appreciate it!
L
Lil
Fish ahydrolysate
Magical stuff. Never seen leaves turn such a deep green. A little lot goes a long way.
Thanks Lil! Love hearing the fish hydrolysate is working its magic—deep green leaves are always a win. Appreciate you sharing the results!
M
Mario
Good product to keep the microbes happy
Very good product & the plants/microbes loved it.
Thanks Mario! Great to hear the fish hydrolysate is keeping both your plants and microbes happy. Appreciate you sharing the love—happy growing!
S
Steve K
Ocean Grown - Fish Hydrolysate (Pure Fish)
Been using this for a while, with great results.. as with all the products, you can't go wrong with Dr Greenthumbs..
Cheers Steve
Thanks a bunch Steve, stoked to hear the fish fert is treating you well! Always good to know it’s doing the job in your garden – really appreciate the kind words and support mate. Cheers!
A cold-processed, certified-organic fish hydrolysate that keeps the full spectrum of amino acids, vitamins, and trace elements intact. NPK: 2.5–1.5–0.3. Ingredients: 100% hydrolysed fish.
Nope. It’s formulated to be essentially zero-smell, so it’s fine for indoor use and tents.
Hydrolysate is cold-processed rather than heat-cooked, so more delicate compounds (like aminos) are preserved. That’s the big advantage over emulsion.
Pretty much everything: seedlings, indoor plants, veggies, lawns, fruit trees, and even hydro systems.
Either works. Mix with water and apply as a soil drench or foliar spray.
Seedlings: 3 ml/L
Transplanting: 5 ml/L
Foliar spray: 3 ml/L
Indoor plants: 5–10 ml/L
Lawns & fruit trees: 10 ml/L
Hydroponics: 3–5 ml/L
Weekly to fortnightly is the sweet spot. If plants are very hungry or growing fast, run weekly on the lower end of the rate.
Avoid applying during heat spikes (above 30 °C) and don’t feed severely stressed or under-watered plants. Always spot-test first.
Early morning or late afternoon is best. If nights are humid, stick to mornings to lower disease pressure.
Yes. They’re designed to complement each other. Use both at their label rates, either together in the same feed or staggered across the week.
Absolutely. Keep those at their normal rates—everything plays nicely when used as directed.
Yes—it’s a great fungal food in aerated teas. Just use the brew promptly after aeration stops.
Generally fine at sensible doses. Start low, monitor EC and plant response, especially in hydro.
Yes—use 3–5 ml/L. Start at the lower end and monitor for biofilm and algae. Organic inputs can contribute to biofilm over time, so plan regular system maintenance.
It’s essentially zero-smell, so it’s one of the rare fish products you can comfortably use indoors.
Keep out of reach of kids and pets. As with any fertiliser, water it in well and keep pets off treated areas until the surface is dry.
Store sealed, cool, and dark. Give the bottle a good shake before use if it’s been sitting.
More active soil life (worms and microbes), improved soil structure, and excellent plant vigour. Many growers also report great flavour and nutrient density in crops thanks to the amino profile.
Dial the rate back and/or reduce frequency. Resume at a lower dose once growth normalises.
Back off the dose, pre-dilute thoroughly, and increase filter changes and line flushes.
Flush with plain water, pause feeds for a week, then resume at a lower rate once temperatures settle.
Fish provides “food” (aminos and organics) while Sugar & Kelp brings chelated micros and chitin-driven signalling that supports resilience and root health. Together they’re a classic growth + defence combo. Typical Sugar & Kelp use range: 1–5 ml/L depending on stage.
100 ml sample, 500 ml, 1 L, 5 L, and 20 L.
Yes—pickup from Bellambi, NSW when shown as “Usually ready in 24 hours.”
🌱 Still got questions mate?
If we haven’t covered it here, no dramas! Just reach out below and we’ll help you out faster than a tomato in Turbodirt. We’re real gardeners (not robots), so you’ll always get an answer that actually makes sense for your plants.
I am very happy with my light bulb it’s certainly bright enough and fitted into a fitting I had for chicken so versatile as well delivery was very prompt. I will order another
Thanks Sonia! Stoked the Treeger bulb is bright, versatile and slotted straight into a fitting you already had! 🌱💡 Great to hear delivery was quick too. Really appreciate the support! 🙌
Arrived safely in a sturdy box, no spillage. Nice, moist soil, definitely no chunks. Will be using for dormancy tubers to protect and nourish without being over damp and rotting the tubers.
Thanks Margaret! Stoked the GreenSpace Potting Soil arrived safely and was exactly what you were after, proper quality soil without the chunky bits! 🌱 Hope it keeps those dormant tubers happy and healthy until they’re ready to spring back into action. Cheers for the lovely feedback! 🙌
Forget your so called Orchid Bark at the big chain stores. This is the real deal; your plants will thank you!
Thanks Patrizia! Love it! 😂 Stoked the Orchiata Bark has hit the mark and given your plants the real deal. Quality bark, no mucking around! Really appreciate the cracking feedback 🌱🙌
Zthis product is amazing, I could see results in days. Top notch product, 👌
Thanks Mark! Love hearing Fruit Roids kicked into gear within days! 🌸💪 Stoked you’re getting such cracking results. Really appreciate the awesome feedback mate! 👌🙌
