Flex PK-Booster Quart | High-Concentration Phosphorus & Potassium Supplement with Chelated Micronutrients for Enhanced Flowering

I can't say if it works yet, since I just got it today. But it arrived on time, and seems like a great company. I'll be buying a lot more, as long as the results are outstanding.

Good hydroponic solution for use with base A and B, works well for fruiting plants like tomatoes and peppers.

Very handy to have around for flowing plants. It's a concentrate, so it will go a long ways in my garden. I haven't tested it in practice, but I think for anyone looking for a flowering stimulant this is a great choice.

I got the quart size. This is a concentrate, so it has to be diluted with water before use. This also means that the bottle lasts a lot longer than it looks, because at a dilution of few milliliters to a gallon makes many many gallons. This is focused towards improving the flowering and fruiting phase of plant growth, so doesn't necessarily get a lot of use for the majority of the plant's growth cycle.This seems to be geared toward hydroponics, but I don't see why it won't work for in-ground plants also. When I do water changes on my hydroponics setups, I use the old water on my raised beds and they don't seem to mind.

This PK booster is a handy product to have around. It allows you to slowly change a vegetative nutrient solution into a bloom/fruiting solution without having to do a full water change. I can achieve similar results by topping up with bloom solution as the veg solution gets used up, but it's nice to be able to make some fine adjustments to the nute ratios if you need to.Pro tip: If you have a knack for chemistry, you can do the same thing using monopotassium phosphate, potassium nitrate, and phosphoric acid. Just go slow and watch your pH and EC levels. Remember that the P and K are not measuring elemental phosphorus and potassium, but rather "potash" and "phosphate."

Highly concentrated PK Booster supplemental synthetic nutrients. Plenty of fast absorption phosphorus and potassium for pushing your plants at any phase but especially late in the flowering stage. Even during veg the zinc will trigger that vigor you're looking for and boosted PK levels for healthy structure and root growth. Designed to boost enzymes, resin and essential oil production, these are a well thought out feeding program that pairs well with the Base A/Base B primary nutrients.

This is a good amount of booster for my hydroponics sets. It is convenient to have a large amount. You do need a funnel to put into the small hole of my hydroponics set.

This provides the Potassium and Phosphorus needed by plants, from what I understand especially in the early stages of growth. It does not provide Nitrogen, although when I did a soil analysis, it showed an excess of nitrogen, so this fits the bill. It is winter now, but I will definitely use as soon as it warms up, and due to the dilution rate, this is a great value.