Yes… just fill the pot to the brim and then slow the tap down so the water stays at the brim 5-mins minutes while it drains.
You may have to lift the pots up on something so water doesn’t pool inside your pots.
Then test the run off with your PH meter and PPM meter.
If it’s still below 5.5 then keep flushing until you reach it.
If you find it’s not pushing above 5.3 then try putting 6.5 pH water in until you get to 6.0
Make sure your runoff is back up to 5.5 of your water. Check several times during your flushing. Then you can fine tune with next water /feed. After they dry out some. 
@GreenCoat has got u on this. 
And I think you may be better off getting it a little it a little above 6 PH because you could still find that it will drop in a few hours. “Possibly”
In coco you want 5.8-6.3 in soil 6.3-6.8
Thanks for the fast reply’s guys as a new bee iv got so far for my first go I’d hate to ruine them now
Yes I went through this exact same thing just on the other end of the PH scale.
Mine was at 7.5 due to not disolving salts properly. I ended up flushing my pot with something like 125L to try and correct it.
Can I offer you my saving grace 
Great resource mate.
The founder of ILGM put this together
When she has settled back in and you have everything back on track do a search on this forum for
“grow journals”
With the grow bible and seeing others grow will have you mastering the art of growing 
.
And I’m glad you’re not replying right now because that means you’re flushing 
Judging by the look of your plant I’m pretty sure your PH is reading correct.
But have you calibrated your pH tester to 7 and also, what type of pH tester do you have?
I was just getting everything ready for flushing Pmsl but what you last said is correct one of the plants are showing no sights of this as it’s thriving the other is wilting a bit but was because the water wasn’t getting to the bottom roots. It’s picking up iv alway kept the ph at 6 so what I was doing was the solid has always been between 3/4ph and iv adjusted the water nutrition so it never reached higher than 6.5 with the both combined and iv been doing for weeks so I’m super confused as iv never had the soil on its own be 6ph
OK let’s try this step by step
When you water/feed do you water enough so you can test the runoff water PH (forget soil PH for now) ?
Not so I can test the run off I’m judging watering for the soil conditions ie if it’s still damp on the top and bottom for the last 2 weeks they have been taking a pint each plant A is thriving but plant B has been dropping so Iv not fed it as much but there not showing any signs for nutrition burn other than slight yellowing on the tips as I don’t have a fan at the no I just leave the tent door open as the temp here in Scotland is nice
Ok you’ve made it this far which means you’ve done a whole lot of things correct but it’s just this one thing that is throwing you off.
And these type of things that throw you off leads back to how you could have done things differently from the start which you will learn going into your second grow.
What’s your media (soil mix) ?
I test the soil PH by putting it directly into the soil but I don’t no haw to calibrate the ph tester back to normal to re test
Ok we will get to this but let’s cover some other things first so things are clear
That’s what I’m thinking as I must be doing something right as the bids on plant A are stacking up but plant B is just dropping leaves lol I thought from reading other people’s journals I needed a combined ph of 6 so was trying to do 3soil 3feed
The grow medium is coca professional
Yeah unfortunately in this game things can turn south early quickly as you have seen. It did for me too dont worry
When you mix up your nutrients. You have to think of each plant separately.
Plant 1:
1st - First you have 10 litres of water. Before adding any nutes you want to get your water only PH to say 6PH.
2nd - once you have your water PH set to 6. You want to add your nutrients as directed on the bottle. If your nutrients move the pH up or down you need to correct this by adding pH up or ph down so it ends up back to 6
3rd - you want to run enough to through your plants so you have water running through the bottom. Ideal you want to raise your pots so you can catch the water coming through the bottom of your pots so you can test the pH of the water and the ppm of the water. You don’t want to be testing the pH of the soil. You want to get into a habit of testing the pH of the runoff after feeding or after watering
You repeat the exact same process for plant number 2.
You don’t divide between two plants they are separate
I’m just using the number 6 as an example it can vary between 5.7 and 6.3
Awesome shall I do this instead of the flush or after and then after I’ll follow these steps to the letter and from now on treat each plant separate
