help!! i'm losing my av's again!
Hi everyone, I'm having problems again and I really need some help. I'm losing my AV's again but this time it is due to powdery mildew. Also think my soil mixture is not right. I have about 25 named varieties and alot of them have babies. I noticed white stuff on the lower part of the leaves and also on the pieces of perlite in the soil mix. Let me back up just a minute. I had algae growing on top of the soil of ones I had bought. So I purchased pyhsan 20 made a weak solution of the stuff and treated my plants. They seemed to handle it ok but had a few rough days. They seemed to come out of it and I thought everything was Ok, I noticed they were dry so I watered them with fertilizer just yesterday as they felt dry to the touch. They are in 3 oz. solo cups and some of the smaller ones are in 1 oz. solo cups.
My soil mixture is 50% perlite, 25% coarse vermiculite and 25% peat. It was suggested that I put thin layer of perlite on the bottom of the cups then filled the rest with the soil mixture. Finally I got mouse ears on alot of them, then the algae appeared so I did physan treatment.The physan really didn't make much of a difference and it was alot of work so I didn't bother to do the follow up 10 day treatment. Just cleaning the top of the dirt made more of a difference so I did this to all of them. Now I just watered them the other day as they were dry to the touch and I have powdery mildew. I have noticed that alot of the mildew is on the perlite. I have cleaned some of the with q-tip and alcohol but I still have the mildew on many plants. I did just put a small fan up tonight to give them adequate air circulation to see if this will help.
Should I transplant them into a better mixture or just leave them alone for now. Some have babies and it is affecting those. They are still to small to separate. I have some leaves that still do not have mouse ears or babies yet on others but I have noticed mildew on the bottom of some of these leaves. I started all of this in July so should I transplant them into a new soil mixture of 1:1:1? I am fertilizing with 7:7:7 each time I water. Some I top water and some are in wick watering containers. Please help me!!! I lost my 1st bunch of leaves and had to start all over. I know I must be doing something wrong just not sure what to do now. They are under lights and have about 12-14 hrs. per day. Sorry I went on so long but just wanted to let you know what's going on so I could get some advice. Any advice would be greatly appreciated. I have googled this and did a search on the forums but didn't find enough information to help. Any thoughts......
Thank you so much for listening to my AV problems!