help with ph in coco

[IMG]my pictures[/IMG]hello to all
well i am having a reet time with my ph my plants r sick the thing is iv had it with the hole thing i think im doing every thing right but ph is all over the place .
this is what im doing if its not right pweez tell me
20 ltr of water (tap)ph 7 ish
mix 3 part ghe in to it
let it sit for ten mins to mix
2ml of ph down 5.5ph
sits 4 ten and top ph up if it needs it
feed to plants .
thing is i have ten pots coco in them all and feed by hand every other day .some of the pots r 5.5 some of them 4.6 and the rest at 5.8 as it shud b .
every thing is sweet other than this ph thing .temp 26 at night 28 to 29 in day
humidity 40 to 55 %
so shud i flush them till all the same or is this a bad idea to do this in coco
thanx garrath

have photos but to daft to load them up sorry

Me i would'nt take my ph below 5.8 ,... should always let your water sit for 24hrs (ph'ed!) after the 24hrs you will get a true reading then if needs to go down add ph down , if needs to go up add water not ph up ! (you should have an extra pot of stood water for this),. when u water check ph on the run off to see where you are. It will do no harm to flush your plants at all they will love ya for it!

thanx 4 the help ill b on with that now .ill b dammed if i know y its gone like this .
i know a flush is ph water only ..
is it any good to flush with a feed if i give lots of run off ??plant r very very in need of the food or shud i give a good old leaf spray with 1 3rd feed
agane thanx for the help

20 ltrs air stone 4 morn.
all plants flushed with just water .

well just one more how long till i can feed
when top of coco is dry or can i just start feeding in morn ?
i ask as its the 1st week or 2nd in 12 12 and thay need a feed
sorry 4 all the daft things i ask but i need to get it on now i only grow 4 me but iv spent more this year on fucking plants up i could have gone to dam for the next 8 weeks
thanx to all

there is a lot of debate about how coco should work. A lot of people say to flush coco because it has some salts(mineral salts) in it, so you have a "clean" mix ready.

Secondly, you seem to have the PH range right, but, i don't use straight coco, so i don't keep my PH that low(6.0 and above) but using tap, and like mentioned, i would let it sit, open to the air(to let chlorine evaporate, unless the water peeps use chloramine, thats another story).

Anyways, some people say to have coco always moist, and to never let it dry out(the only reason i can see this ideology is to keep PH stable, or more stable), however, there are many who let it dry out real well before watering again and have no negative effects.

iv been told to water every day but got a bit of root rot so iv gone to every other day now
iv set the ph now left water out all night soill try agane

would you know if my plants old leaves that r a bit curled and sad will come round or just look at new growth
hope this works thanx for all the help ill keep u up to date with the progress