I have a system from vertex and it is top notch. I also have done the DIY type aeration systems buying parts on ebay. Wasted time and money but at least its in the past.

Look up vertex aeration on google or in the resources on pond boss website. They can definitely get a system to fit your pond. At your depth it will run around 10-12psi I am guessing and these systems run up to 25psi. I would say 1/3 hp system 3cfm or so would be a good fit. Figure out what your average depth is and surface acres and then you can calculate the amount of water you need to turn. They say around 1.5 turns/day is ideal.

It will also help with the slime. To speed up correcting the slime issue you should look into benefitial bacteria plus aeration.

Warning!!! I am not an expert and I think you should talk to one. These are 3 on the forum from the top of my head.
Sue Cruz
Ted Lea FOREVERGREEN
n8ly

"I think I have a nibble" Homer Simpson

34ac natural lake