Dave wrote:
We have some kind of clearish, gel-like stuff growing in our drip
line, and I really don't think bleach is the best thing to be dumping
in my yard. Thinking if I just change the Ph a little for a while,
like with vinegar or maybe even a couple pots of (cooled) tea, it
might eliminate the problem. What do others use?

To be fair, the guy who works on our unit says he uses bleach every
couple months, but his drip line goes to the sewer and mine doesn't. My
wife mentioned the bleach idea to a building engineer where she
works (40 story block-wide building in downtown Houston) and he got
really serious, saying don't ever put chlorine bleacn in anything
like a drip line. It will eat up anything it comes in contact with. Now,
I know that chlorine is highly reactive, but is schedule 40 PVC
really that fragile? If I had to I could catch the drip for a couple
days...
Dave (who is uncertain at this point.)


Are you sure?

Many times there are TWO drip lines: The regular one goes to the sainitary
stack so the condensate ends up in the sewer. Then there's a second line
from the pan under the evaporator unit that fills when the first line
becomes clogged.

You should clean both.

There are also biocide tablets you can drop in the evaporator to kill algae
for an extend period.

Me? I just dump a cup of bleach right out of the bottle into the evaporator
unit tray. I don't care if it kills the grass - any grass worth a hoot will
grow back.