Where to buy Physan20 in UK or alternative product

[LuizaG]

Hi everyone

I have a Phal that has been in recovery for a while now, I changed it to S/H last November and since April this year has been growing like crazy. About 8 - 9 new roots, one new leaf and now I just noticed another 3 new roots and another new leaf starting. All very nice and finally feels like it was worth not to give up on it.

But another problem has come up: I have algae in the pot that has spread everywhere, possibly suffocating all those lovely new roots. It is time to repot again to get rid of algae and also the roots have started growing down where the water reservoir is.

The roots have pellets with algae stuck to them that I will not be able to remove without damaging the roots and if the algae is not killed (without killing the roots too) it will not be long until the new poting medium will be filled again.

How do I kill the algae but not the roots? I couldn't manage find Physan20 anywhere in UK. Does anybody know somewhere to get it from in uk? Is there anything else I can use?

Many thanks
Luiza