Hi, I come to you as I have no explanations to my problem.
I have some species that were growing well until last year, and now slowing becoming more yellow and not growing anymore. The roots are not rot, they are good. I fertlize at quite low rate (and give the heavy feeders some slow release fertilizer, no problem for them). Not a problem of too much light as freshly deflasked plants seem to grow with no problem.
anitum, sanderianum, lowii, dianthum and others are now more yellow than previously and don't grow as fast as before.
I give them a complete fertilizer (akerne rain mix), with all N as nitrate, high Mg, neutral pH and add a little kelp extract in the water.
EC is about 250µS/cm
one year ago, I was fertilizing with home made fertilizer, NH4N03 based with same pH and EC, but much lower K.
I have changed as many species, especially Catts or Dendrobium were not growing well.
so do you think there could be an issue with that or may I find another explanation?
I have some species that were growing well until last year, and now slowing becoming more yellow and not growing anymore. The roots are not rot, they are good. I fertlize at quite low rate (and give the heavy feeders some slow release fertilizer, no problem for them). Not a problem of too much light as freshly deflasked plants seem to grow with no problem.
anitum, sanderianum, lowii, dianthum and others are now more yellow than previously and don't grow as fast as before.
I give them a complete fertilizer (akerne rain mix), with all N as nitrate, high Mg, neutral pH and add a little kelp extract in the water.
EC is about 250µS/cm
one year ago, I was fertilizing with home made fertilizer, NH4N03 based with same pH and EC, but much lower K.
I have changed as many species, especially Catts or Dendrobium were not growing well.
so do you think there could be an issue with that or may I find another explanation?