Wilma 8 pot and coco advice (Uk)

Hi guys.
We have a Wilma 8 pot that we have recently set up.
Plants look lovely, everything is good in the garden.
Now cos we had a load of A & B left from when we ran run to waste and our next grow will be a proper hydro clay pebbles jobbie we've been using up our old stock before buying some Aqua Flora or similar.
(These plants were already started in coco before we got this set-up)
Just gone on to 12 hours so my question.....

It's time to add Boost. How much? Before I made feed up in buckets according to Canna's recommendations.
Now we have a 70 litre reservoir I'm not sure how much to add. Should I make up the full amount or half strength like I've been doing with the A & B?

When it comes to adding PK what's the score there? As it's only added for one week is this a good time to renew fresh feed and change the water after that week is over or does it get used/diluted naturally?

I've been using the blue spikes and running the pump twice a day. Should I be using them black drippers and leave it running all the time? Seem to be doing fine as they are and if it isn't broke I won't try to fix it. What works best?

This Wilma is the best thing we have invested in so far and I want to get the best out of it I can so any help would be appreciated.
Ta Guys
Wiz
 
I'm not a fan of canna to be honest - ionic are my preferred. Canna boost is pretty funny and has different effects with different strains . My suggestion would be to use less to start with and see how it goes. It sometimes pays to give it the odd ph flush to freshen them up. And use the drippers about 30mm from the main stem . Check out these systems - massive yields , fast times and easy to play with different nutrient setups ! Www.multicult-hydroponics.co.uk
I already have a setup thanks. I want to know how to go on come PK week.
 
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