yeah my perlite turns orange after my 1st or 2nd watering without nutes
michaelpeg Reviewed by michaelpeg on . Perlite Q: I grow in soil and perlite, about 3:2. I have been using foxfarm bigbloom and growbig and some liquid karma so far. Anyways my question is why is my perlite on the very top turn orange??? Is this because the lights do something to the nutes that was in the water and now on the perlite??? or this this something more serious?? Rating: 5