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Hydroponic Gardening

Mastering EC Balance: A Beginner’s Guide for Hydroponic Growers in Australia

Mastering EC Balance: A Beginner’s Guide for Hydroponic Growers in Australia

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Let customers speak for us

from 2668 reviews
Looks lovely

Looks lovely a little messy but worth it to add on top of soil

Julian
04/22/2026
Hydroton / LECA / Clay Balls
Hydroton / LECA / Clay Balls
Amazing well priced product

Calibration solution worked exactly as needed, great product for an extremely reasonable price. 10/10 will be buying again when I need to calibrate pen.

Mason Rooy
04/22/2026
Bluelab pH 4.0 Calibration Solution – For Accurate pH Meter Calibration
Bluelab pH 4.0 Calibration Solution – For Accurate pH Meter Calibration
Awesome soil base.

I had tried a heap of different build your own soil mix recipes, but none of them worked really well for me, so I had given up and started looking for a generic potting mix to use.

When I discovered Dr Greenthumbs I looked over all the products available on their website, before realising that I only lived 20 minutes drive from their Belambi store,. I couldn't wait to visit the store in person.

When I first spotted the Cactus and Sucvulent Soil Builder on their website I read the description and thought that it looked interesting, and after visiting the store and talking to Scott, who really knows his stuff, I decided to try this mix.

When I got it home I mixed it in with a premium organic potting soil mix as it advises in the product description, and then I added in a few little extras to suit the growing conditions at my home.

I added small amounts of charcoal, worm castings and organic compost to the mixture and let it sit for two weeks, then I started using it when repotting some of my plants and potting up a bunch of new propagations and crossed my fingers hoping this mix woukd be the one.

And three months later I'm so impressed. I used the Cactus and Succulent Builder mix that I made with pretty much all my plants, not just cactus and succulents, as I have a huge variety of potted houseplants and the mix I cam up with seems to be working great for all my plants.

They all look so happy and healthy and the amount of new growth I've seen over the past three months since using this mix in all my pots has been better than I've ever seen before.

I'm really impressed with this soil builder mix and from now on it's going to be the base for my homemade soil mixture all the time, and I've recommeded it to a handful of my plant loving friends as well, and they are all as impressed with this product as I am.

Dr Greenthumbs has become my number one store for all my soil needs for my plants.

I love this store, and I've had nothing but great experiences with the staff when I've visited the shop in person as well as when I phone the store for some advice about products as well as going online to order from their website.

My favourite new store, and my favourite all time best product for helping me care for my much loved house plants.

Mumma Love
04/20/2026
Cactus & Succulent Soil Builder (DIY Mineral Kit)
Cactus & Succulent Soil Builder (DIY Mineral Kit)
Highly recommend!👍👍

Super Si - Monosilicic Acid Concentrate is a product and the price is right! Thanks Dr. Greenthumbs!👍👍

Tim
04/19/2026
Super Si - Monosilicic Acid Concentrate
Super Si - Monosilicic Acid Concentrate
Beginner

Im a newbie to gardening, scott has been so patient with me. They have great quality products friendly, helpful advice, i will be returning for all my gardening needs.

Jess
04/17/2026
Root Roids Sachet Kit (3 x Sachets)
Root Roids Sachet Kit (3 x Sachets)
Immediate improvement

My soil was really lacking and plants were slow growing and lacking in flowers. Added Dr Green thumbs liquid guano and other Dr Green Thumbs fertiliser and BLOOMing results. Have tried other’s products but Dr Green Thumbs really works.

G W
04/16/2026
BioGuano+ Phosphorus Fertilizer 1L / 5L (Liquid Seabird Guano)
BioGuano+ Phosphorus Fertilizer 1L / 5L (Liquid Seabird Guano)
Great value

Have a 3×3 living bed this kit has enough food for the whole year

Sean Moffatt
04/15/2026
Alfalfa Meal (Triacontanol + Balanced NPK)
Alfalfa Meal (Triacontanol + Balanced NPK)
Grow bags

10/10 fabric grow bag, will use nothing else. Love em

T.O.
04/15/2026
Grow Sack Recycled Fabric Grow Pot
Grow Sack Recycled Fabric Grow Pot
A++ would recommend

This is my second time purchasing this fertiliser. Like others have mentioned, within a few days of using Greenspace Liquid Fertiliser for the first time, my plants looked more vibrant and are thriving. Having previously used Plant Runner products, I found this to be more effective. The bottle has lasted a LONG time in a house with 50+ indoor plants. A++ would recommend.

Casey McFadyen
04/13/2026
GreenSpace Liquid Fertilizer - Designed For Foliage (Aroids, Orchids, Monsteras)
GreenSpace Liquid Fertilizer - Designed For Foliage (Aroids, Orchids, Monsteras)
Great product and service

Bought to replace the black plastic pots I had fruit trees in to regulate root zone temperature and prevent root circling

Chad K.
04/13/2026
Grow Sack Recycled Fabric Grow Pot
Grow Sack Recycled Fabric Grow Pot
Excellent!

Always use this when repotting plants, and in combination with root roids, I must say, my plants have been handling repotting much better, and their roots have been growing strong

Ania
04/10/2026
Root Roids Sachet - Free Gift!
Root Roids Sachet - Free Gift!
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

Penny White
04/10/2026
Ocean Grown - Fish Hydrolysate (Pure Fish)
Ocean Grown - Fish Hydrolysate (Pure Fish)
Happy plants!

My plants seem to be happier already! And great not having to find all these ingredients myself, to make my own. Service is fast & efficient also. Definitely feels like a more premium soil for my plants’

Kaz
04/07/2026
Chunky Potting Soil (Designed For Aroid Plants)
Chunky Potting Soil (Designed For Aroid Plants)
Terrific product

This product totally changed my plants’ response to nutrients. Strongly recommend.

Glenn P
04/03/2026
Flairform pH Down (250ml / 1L)
Flairform pH Down (250ml / 1L)
Good stuff

All the rootroid products are really good will continue to use. Happy gardener here.

Sy
03/30/2026
Dr Greenthumbs Root Roids Granular (Mycorrhizal Inoculant)
Dr Greenthumbs Root Roids Granular (Mycorrhizal Inoculant)
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U4 / 1 Pioneer Drive
Bellambi NSW 2518

1800 983 006

Dr Greenthumbs (DRGT pty ltd) is a innovative and customer centric business nestled amidst the stunning beauty of the Wollongong escarpment in NSW.

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★ Reviews

Let customers speak for us

2668 reviews
Write a review
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J
Hydroton / LECA / Clay Balls
Julian
Looks lovely

Looks lovely a little messy but worth it to add on top of soil

Thanks Julian! Haha yeah they can be a bit messy to wrangle, but they clean up nicely on top. Stoked you’re loving it mate! 🙌

M
Bluelab pH 4.0 Calibration Solution – For Accurate pH Meter Calibration
Mason Rooy
Amazing well priced product

Calibration solution worked exactly as needed, great product for an extremely reasonable price. 10/10 will be buying again when I need to calibrate pen.

Thanks Mason! Stoked to hear it did the job perfectly and at a good price too. Appreciate the 10/10, we’ll be ready when it’s time for the next calibration! 🙌

M
Cactus & Succulent Soil Builder (DIY Mineral Kit)
Mumma Love
Awesome soil base.

I had tried a heap of different build your own soil mix recipes, but none of them worked really well for me, so I had given up and started looking for a generic potting mix to use.

When I discovered Dr Greenthumbs I looked over all the products available on their website, before realising that I only lived 20 minutes drive from their Belambi store,. I couldn't wait to visit the store in person.

When I first spotted the Cactus and Sucvulent Soil Builder on their website I read the description and thought that it looked interesting, and after visiting the store and talking to Scott, who really knows his stuff, I decided to try this mix.

When I got it home I mixed it in with a premium organic potting soil mix as it advises in the product description, and then I added in a few little extras to suit the growing conditions at my home.

I added small amounts of charcoal, worm castings and organic compost to the mixture and let it sit for two weeks, then I started using it when repotting some of my plants and potting up a bunch of new propagations and crossed my fingers hoping this mix woukd be the one.

And three months later I'm so impressed. I used the Cactus and Succulent Builder mix that I made with pretty much all my plants, not just cactus and succulents, as I have a huge variety of potted houseplants and the mix I cam up with seems to be working great for all my plants.

They all look so happy and healthy and the amount of new growth I've seen over the past three months since using this mix in all my pots has been better than I've ever seen before.

I'm really impressed with this soil builder mix and from now on it's going to be the base for my homemade soil mixture all the time, and I've recommeded it to a handful of my plant loving friends as well, and they are all as impressed with this product as I am.

Dr Greenthumbs has become my number one store for all my soil needs for my plants.

I love this store, and I've had nothing but great experiences with the staff when I've visited the shop in person as well as when I phone the store for some advice about products as well as going online to order from their website.

My favourite new store, and my favourite all time best product for helping me care for my much loved house plants.

Thanks legend! What a journey, love hearing how you’ve dialled in your perfect mix and got such epic results across all your plants Sounds like everything’s absolutely thriving! Stoked we could help steer you in the right direction too. Really appreciate the support and the word-of-mouth, means a lot! 🙌

T
Super Si - Monosilicic Acid Concentrate
Tim
Highly recommend!👍👍

Super Si - Monosilicic Acid Concentrate is a product and the price is right! Thanks Dr. Greenthumbs!👍👍

Thanks Tim! Love hearing you’re enjoying the Super Si and that it’s hitting the mark on value too. Really appreciate the recommendation mate!

J
Root Roids Sachet Kit (3 x Sachets)
Jess
Beginner

Im a newbie to gardening, scott has been so patient with me. They have great quality products friendly, helpful advice, i will be returning for all my gardening needs.

Thanks Jess! Love hearing you’re getting stuck into gardening, we’ve all gotta start somewhere hey. Stoked we have been able to help you out and that you’re loving the products. We’ll be here whenever you need us! 🙌

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