PH can make or
break your nutrient solution. 6.7-6.2 is best to ensure there is
no nutrient lock-up occurring. Hydroponics requires the solution
to be PH corrected for the medium before exposing to the plants.
Phosphoresic acid can make the PH go down; lime or potash can
take it up when it gets too acid. Buy a PH meter for $10 and use
it in soil, water, and hydroponic medium to make sure your not
going alkaline or acid over time. Most neutral mediums can use a
little vinegar to make them just this side of 7 ph to 6.5 or so.
cause a ph change in the soil. Adding fertilizer to the soil
almost always results in a more acidic ph.
As time goes on,
the amount of salts produced by the breakdown of fertilizers in
the soil causes the soil to become increasingly acidic and
eventually the concentration of these salts in the soil will
stunt the plant and cause browning out of the foliage. Also, as
the plant gets older its roots become less effective in bringing
food to the leaves. To avoid the accumulation of these salts in
your soil and to ensure that your plant is getting all of the
food it needs you can begin leaf feeding your plant at the age
of about 1.5 months. Dissolve the fertilizer in worm water and
spray the mixture directly onto the foliage. The leaves absorb
the fertilizer into their veins. If you want to continue to put
fertilizer into the soil as well as leaf feeding, be sure not to
overdose your plants.