Optimum is one of our popular nutrients. We have sold it since 1991 and it has always been a safe nutrient brand. Available as Optimum Grow and Optimum Bloom for the leafy and flower/fruiting stages respectively.
It is a complete and balanced A and B pack and is suitable for hydroponic systems with clay, perlite or rockwool growing media. It can also be used in Coconut coir if needed, but an GT Coco specific nutrient is available also. We first started selling Optimum in 1991 and its been popular all that time.
Be The First To Review This Product!
Help other Hydrocentre Hydroponics users shop smarter by writing reviews for products you have purchased.
Backorders are products that are on their way to us from suppliers.
Backorders will be dispatched to you as soon as they arrive - usually in 1-7 days
If you want to contact us we can let you know the delay.
We will send you an ETA as soon as we can, and you can cancel the backorder and get a full refund if you want to.
Do you wish to proceed knowing there will be a delay of around 1-7 days?
(If you have urgent items as well as Backorder items, please send as two separate orders so the urgent items go out immediately.)
You’ve just added a Pick-Up only Item to your cart!
The item you have added to your cart was a Pick-Up only item and will make your order a Pick-Up order if you choose to continue.
To reverse this, press close and the item will not be added to your cart.
Shop Now. Pay Later. Always interest-free.
Add your favourites to cart
Select Afterpay at checkout
Log into or create your Afterpay account, with instant approval decision
Your purchase will be split into 4 payments, payable every 2 weeks
All you need to apply is to have a debit or credit card, to be over 18 years of age, and to be a resident of country offering Afterpay
Late fees and additional eligibility criteria apply. The first payment may be due at the time of purchase
For complete terms visit afterpay.com/terms