have you been potting them up? or have they been in the same pot the whole time

you want to put them into the 10l pot before you flower so the root mass can build up as when you start flowering the root growth slows down a lot.

they should have plenty of fresh nutes in the soil if you're potting them up, when did you last pot up? maybe they are ready to go into the new 10l pot? (check the root ball), have you got a picture of the whole plant? perhaps the superthrive is causing problems (possible nute lockout), I stopped giving my aero grow all these extra additives and now things are running smoothly, sometime you just gotta keep it simple.

i potted the into 5l pots a week past on wednesday there,i am going to veg the for 4 weeks before i put into flowering..
i have potted some of my plants str8 into the 10L pots but seem to have the same problem.could it be because i am using superthrive with all mix and thats causing some sort of problem because the soil is already slightly fertilized??

as a general quideline, Id say drop the superthrive, pot up every 2 weeks and only feed water, when they have been in the final pot for 2 weeks start feeding them grow and bloom as per ot1's schedule

The BioBizz chart is for rooted cuttings not seedlings.

The optimum ph of the compost for maintaining health and growth is 6.5 to 6.8. It is much harder for the compost to buffer up than to buffer down.

I don't know how many time I have to say this, if you do ph down not below 6.5! You will mess up the micro flora and if not very careful ruin the compost..

In answer to your Q's Mr Dragon your programme vis 3 inch to 6 inch to 11 litre is fine. But for the 3 inch pots use half and half allmix and perlite.

As soon as the rootball is netted with fine roots move them to your 6 inch pots and neat allmix.

Same story for the move to the final pots. Once in the final pots let them root out the soil ball before flowering, as a general rule of thumb once all the plants are showing roots at the drainage holes. Go to 12/12.

You should not need any feed right through these stages. Once you are on 12/12 start feeding 1 ml of both grow and bloom to a litre of water.

At about week 2 of flowering change the mix to 1 ml grow and 2 ml bloom per litre.

At week 3 [21 days] a one off feed of a heaped table spoon of epsom salts per 10 litres add to that 1 ml of grow and 2 ml of bloom.

Round the 4 week mark, the mix is 1ml gr and 3 ml bl.

Once you start to see browning of pistils change to 2 ml gr and 1 ml bl keep with that till the end.

All you really need is grow and bloom + a little epsom salts.

Does this make sense?

An added point, if you see the tissue between the veins on the lower leaves turning a lighter green at any point its likly the first signs of Mg shortage starting an addition of a little epsom salts to the next feed should keep things right. Don’t over do this or else you can lock out other nutrients.

Being a puter man you will love this, I just spent an hr or more trying to find out why my new fire wire drive just would not mount on the desk top. I reinstalled all the extentions/drivers nadt. Then it occored to me it might work if I plugged the firewire cable in. Ot "good with plants shit with computers"