C-Result C-Big Buds

C-Big Buds is C-Result's PK booster, at a stated PK value of 21/33. What sets it apart is not that figure but when you give it, because that differs from almost every other PK on this shelf.

From the first week to the last, not only at the finish

Most PK boosters are ripeners. They go in for the final weeks of flowering and not before, because that is when demand for phosphorus and potassium peaks.

In C-Result's grow schedule, C-Big Buds appears in every single column: from the first week of growth through the ninth week of bloom, at 1 ml per litre each time, switching to plain water only in the final week.

That is a fundamentally different approach from a short, high push at the end. You give a low dose across the whole run instead of a peak at the moment your EC is already high.

Two other accounts circulate in the trade: that you start it at the beginning of bloom, and that it is meant for the last three to four weeks. Neither is in the manufacturer's schedule. We follow the schedule.

What is in it

C-Result state the PK value as 21/33 and name calcium chloride as a further component.

That ratio is notably potassium-heavy: over one and a half times as much potassium as phosphorus. It suits a product that runs the whole cycle rather than forcing the ripening alone, because potassium is the element a plant uses throughout for water management and for moving sugars.

The manufacturer claims high yield, resin production and aroma from it, and states that it works on all substrates and combines with any nutrient brand.

In use

1 ml per litre of feed water. Add it to your reservoir together with your other feed and boosters, and mix. If you also use C-Result itself, that goes in last, after everything you have added as feed.

C-Result's grow schedule also gives target values for your EC and pH by week and by substrate. The EC there rises from around 1.5 at the start to 2.4 in late bloom, dropping to 0.3 in the flush week. The pH targets differ by medium: 5.8 to 6.2 on soil, 5.5 to 5.9 on rockwool, 5.6 to 6.0 on coco and 5.8 to 6.2 in hydro systems.

The schedule assumes tap water at an EC of 0.3; if yours runs higher, account for that.

Available sizes

Technical Specifications:

• Type: concentrated PK booster
• Manufacturer: C-Result
• PK value: 21/33 as stated
• Also named: calcium chloride
• Dose: 1 ml per litre of feed water
• Period: the whole cycle, from growth week 1 through bloom week 9
• Final week: water only
• Suitable for: soil, coco, rockwool and hydro systems
• Combines with: any nutrient brand

Frequently asked questions

When do I start?
From the first week of growth. C-Result's schedule has it in every week at 1 ml per litre, up to the flush week.

So it is not a ripener?
Not in the usual sense. You give a low dose across the whole crop rather than a high push at the end.

I read that it is for the final weeks.
Some shops say so, but the manufacturer's grow schedule does not.

What is the PK value?
21/33, with calcium chloride named alongside.

Can I use it with another brand of feed?
Yes, C-Result state it combines with any nutrient brand.