Temps dropped last few days to low of 8 degrees and only high of 30 degrees next 5 days. Water temp in pool is now 30 degrees. Pumps on 3400 RPM 24/7,. Question is should I run my ultra temp in hope to keep water above freezing? I am currently bypassing it. Any other recommendations to prevent damage? Surface of water is currently open, ice starting to form along edges.