As i have been growing orchids for a while now , i have been dabbling with
ppm/PH and the affects the fertilizers have on other compounds.I have
increased the ph as i use rain water,to around 6.6.Just to be inquisitive i
poored my feed mix through 3 of my pots and caught the excess from the
bottom.I tested this and the ph was alot lower than i thought i would be,
5.0,5.5, 6.4 all 3 of these plants grow in a bark/spag/perlite mix.The first
2 pots the ph is on the low side.So am i reading too much into this or is
there a issue here.As the feed mix is becoming too acidic when poored
through the bark mix,does this mean this is the ph the plants are
absorbing,if so do i need to compensate this by increasing the ph further.I
have only just started to take note on the ph levels,so my rain water ph is
around 5.5,so what ph have my plants been getting.Going by what i have found
with these 3 pots tested ,around 4.5!Way to low.It is a interesting and
logical subject once you read,read again,read/read again ,it starts to sink
in the affects low/high ph have on orchids.
Hope you get what i mean here and i am not sounding like a obsessed
nutter.My regime before was a standard fert 1/4 strength /rainwater when i
could be bothered to feed.I knew this was`nt the best regime for my plants
and it fitted with the time i was willing to give the plants.Things have
changed and i am willing to give them more.
Thanks Keith