Quick Answer: Terra Aquatica NovaMax vs TriPart, Which to Choose
- NovaMax is a true 1-part system, Grow for veg and Bloom for flower, dosed at 2.5ml per litre maximum. No ratios to manage.
- TriPart is a 3-part system (Micro, Grow, Bloom) with more control over nutrient ratios but more variables to manage.
- NovaMax is the right choice for beginners, coco growers, and anyone who wants simplicity without sacrificing quality.
- TriPart suits experienced growers who want to adjust ratios for specific growth stages, system types, or water quality conditions.
- Both systems are pH-stable, ultra-concentrated, and produce equivalent results when used correctly at the right EC.
- Switching between the two systems mid-grow is possible, just flush the system first and start the new program at a low EC.
Terra Aquatica makes two of the most widely used hydroponic nutrient systems in Australia: NovaMax and TriPart. Both are proven, both are concentrated, and both will grow exceptional plants. The question is which one suits your setup, your experience level, and how much control you actually want over your feed program. This guide breaks down the key differences so you can make the right call before you buy.
Terra Aquatica NovaMax: the 1-part system
NovaMax is a true 1-part nutrient system. You buy Grow for the vegetative stage and Bloom for flowering, and that is it. No mixing ratios between multiple bottles, no adjusting part A against part B. One bottle per stage, dosed at 2.5ml per litre maximum. It is ultra-concentrated, pH-stable, and formulated to work across DWC, NFT, coco, and soil without additional CalMag or base additives in most cases. NovaMax suits beginners because fewer variables means fewer mistakes. It also suits automated systems because single-part dosing is far easier to automate with dosing pumps. It is not a budget nutrient — it is a professional-grade 1-part system that produces consistent, high-quality results without the complexity of a 3-part program.
Terra Aquatica NovaMax Grow is used for vegetative growth. Terra Aquatica NovaMax Bloom is used for flowering. The NovaMax Starter Kit includes both in one purchase for new growers.
Terra Aquatica TriPart: the 3-part system
TriPart is a 3-part nutrient system consisting of Micro, Grow, and Bloom. Each part delivers a specific nutrient profile, and you adjust the ratios between them depending on your growth stage, water source, and the specific demands of your plants. It is the most flexible nutrient system Terra Aquatica makes. Used correctly, it gives you precise control over your NPK ratios at every stage of the growth cycle. TriPart suits experienced growers who understand nutrient ratios and want to fine-tune their feed program to their specific strain, system, and environment. TriPart Micro comes in both hard water and soft water versions, allowing you to adjust your base nutrient to your local water chemistry — particularly relevant in Australia where water hardness varies significantly by region. The ability to adjust ratios between Micro, Grow, and Bloom also means you can tailor your feed to the specific demands of different plants in the same system.
Terra Aquatica TriPart Micro delivers essential micro-elements and always goes into the reservoir first. Terra Aquatica TriPart Grow is used for vegetative growth. Terra Aquatica TriPart Bloom is used for flowering.
NovaMax versus TriPart: the key differences
NovaMax wins on mixing simplicity — one bottle per stage versus three bottles with variable ratios. TriPart wins on control and flexibility, with adjustable ratios that give experienced growers more precision. TriPart also wins on water chemistry adaptation, with hard and soft water Micro versions that allow you to match your local water source. NovaMax wins on automation compatibility because single-part dosing is significantly easier to automate. Cost per litre of nutrient solution is comparable — both are ultra-concentrated and used at low doses per litre. Both systems work across DWC, NFT, coco, and soil.
Which one to choose
If you are new to hydroponics or want a clean, simple feed program that still delivers professional results, start with NovaMax. It removes the variables that trip up new growers and lets you focus on the fundamentals. If you have been growing for a season or two and want more control over your nutrient ratios, or if your local water chemistry is a factor, TriPart gives you the flexibility to dial in your program precisely. Both systems are proven and used by serious growers across Australia. The right choice comes down to where you are in your growing journey and how much complexity you want to manage.
Terra Aquatica nutrients in Australia
Both NovaMax and TriPart sit within our Base Nutrients collection alongside the other 2-part and 3-part systems we stock, if you want to compare Terra Aquatica against other brands before deciding. For the full range of additives and boosters too, browse the Hydroponic Nutrients and Additives collection.
Frequently Asked Questions
Is NovaMax good enough for serious growers, or just for beginners?
NovaMax is a professional-grade 1-part system, not a simplified or budget option. Experienced growers running automated dosing systems often prefer it specifically because single-part dosing is easier to automate accurately than managing ratios across three separate parts.
Can I switch from NovaMax to TriPart partway through a grow?
Yes. Flush your system with plain pH-balanced water first, then start the new program at a lower EC than your target and build up over a few feeds. This avoids shocking the plant with an unfamiliar nutrient ratio at full strength.
Do I need separate Cal-Mag with NovaMax or TriPart?
Neither system typically requires additional Cal-Mag in most setups, both are formulated to deliver adequate calcium and magnesium on their own. Coco coir growers using very soft or RO water may still benefit from light Cal-Mag supplementation regardless of which Terra Aquatica system they're running.
Which system is better for a hard water area like Adelaide or Perth?
TriPart Micro's hard water formulation is the more direct answer, since it's specifically adjusted for high-mineral-content tap water. NovaMax doesn't offer separate hard and soft water versions, so TriPart gives you more control if your local water chemistry is a known factor.
Is TriPart more expensive to run than NovaMax?
Cost per litre of finished nutrient solution is comparable between the two, since both are ultra-concentrated and used at low doses. The difference is in mixing complexity, not ongoing cost, TriPart simply requires managing three bottles and their ratios instead of one.