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Nutrient Kits
Four complete nutrient kits that take a plant from seedling through to harvest in a single purchase, priced from $79.95 to $384.95. Brands include Byron Bay Gold, Terra Aquatica and the CYCO Platinum Series.
A kit makes sense if you're setting up for the first time and don't want to work out which bottles pair with which, or if you're moving to a new brand and would rather take the whole program at once than piece it together over a few orders. Every kit on this page is a matched set from one brand, so the ratios are already sorted and a feed chart tells you what to run each week. Treat the numbers on that chart as a ceiling for ideal conditions rather than a starting point. Most growers run 50 to 70% of label strength and build up based on how the plants respond, and our feeding guide and EC targets article covers the stage-by-stage ranges and the variables that decide how much your plants can actually use. If you're just starting out, we'd point you at the Byron Bay Gold Slab of Gold. It's the easiest of the four to run and it finishes well, which is a hard combination to get right on a first grow.
If you'd rather build your own program, the Base Nutrients collection covers two-part and three-part systems on their own, and Additives and Boosters covers what goes on top once your base feed is dialled in. Seeing problems already? The Troubleshooting Index covers common nutrient issues in a fast, dot-point format.
Frequently Asked Questions
Which kit is best for a beginner?
The Byron Bay Gold Slab of Gold. It's a three-stage A and B program, so you're only ever mixing two bottles at a time, and the stages tell you when to change rather than leaving you to judge it. It's also Australian made and finishes well, which matters more on a first grow than having every additive available.
Should I follow the feed chart dose exactly?
Treat it as a ceiling, not a target. The printed dose assumes ideal light, temperature and root health, and most growers get better results starting at 50 to 70% of label strength and increasing based on plant response. Check EC after mixing rather than trusting the millilitres, since your water's starting EC changes what you end up with.
Is a kit cheaper than buying the bottles separately?
Not always, and it's worth checking. What a kit reliably saves you is the guesswork and the freight on multiple orders, since everything arrives together in one parcel. Compare the kit price against the individual products before you buy.
How long does a nutrient kit last?
It depends on how many plants you're running and how big your reservoir is. A 1L kit generally covers one full cycle for a small tent. Larger kits and 5L sizes stretch across several cycles. Unopened bottles keep for about 2 years, and once opened you'll want to use them within 12 months.
Do I still need additives if I buy a kit?
No. Every kit here is complete on its own and includes a feed chart that runs to harvest. Additives are optional extras once your base feeding is consistent, not something the kit is missing.
Can I use a nutrient kit in soil as well as hydro?
Most of them, yes. Soil holds nutrients differently to an inert medium, so start at 50 to 70% of the hydroponic dose and adjust from there based on how the plants respond.
Should I start with the biggest kit to save money?
Generally no. Nutrients have a shelf life, so a large kit you can't get through in two years costs more than it saves. Start with the smallest kit that covers a full cycle and size up once you know what you actually get through.