Description
Grotek Vitamax Plus is a liquid plant supplement from Canadian nutrient maker Grotek, supplied here in a 4 litre bottle. It is built on a kelp extract with plant proteins, organic acids and a spread of primary and secondary nutrients, including added magnesium. It is designed to be added to your existing feed programme rather than replace it.
What Vitamax Plus is used for
Grotek position Vitamax Plus as an all-round tonic that adds depth to almost any feed programme. Growers use it to:
- Help plants settle after transplanting and encourage strong root development
- Support general vigour and recovery from stress, such as heat, handling or a feeding mistake
- Back up healthy growth through veg and into bloom
The kelp base is a natural source of growth-supporting compounds, and the magnesium plays a part in chlorophyll, which helps keep leaves green and working.
How to use it
Add Vitamax Plus to your nutrient solution after your base feed, then check EC and pH once everything is mixed. Always follow the dosage and feeding guidance on the Grotek label. It can be used with soil, coco and hydro feeds, and with most nutrient brands.
If you want to build a full feeding schedule around it, see our guide to hydroponic nutrients and additives, or browse more additives & boosters.
FAQs
Is Vitamax Plus a base nutrient?
No. It is a supplement. You still need a complete base feed for each stage of growth.
Can I use it with other additives?
Yes, but add products one at a time, stir between each, and keep an eye on your total EC so the feed doesn't get too strong.
Why the 4L size?
The 4L bottle is the better-value option for growers who use a tonic every cycle or run more than one tent.
Buy from Black Country Systems
We're a family-run hydroponics shop at Unit 2 Black Lake, West Bromwich, B70 0PJ, helping growers for more than ten years. Pop in, call 0121 553 7872 or message us on WhatsApp and we'll help you fit Vitamax Plus into your feed plan. Free UK delivery on orders over £94.99, and we price match.
