Originally Posted By: dg84s
If you are going to divert all the air from deep summer diffusers to a single shallow winter diffuser, you may want to install a tee and bleed-off valve in the winter air circuit. Doing so will prevent damaging your shallow diffuser.


Another way would be to have the same number of diffusers in one area as you use total in the pond during the summer. i.e. if you you use 2 air stations during the summer, each with 2 diffusers, then use a 4 diffuser air station for the winter.

OR, use a few airstones that produce coarser bubbles for the winter. Fine bubbles for water movement during the summer with membrane diffusers, coarse bubbles for the winter to produce wave action.

www.hoosierpondpros.com

[Linked Image from lh6.ggpht.com]
http://www.pondboss.com/subscribe.asp?c=4
3/4 to 1 1/4 ac pond LMB, SMB, PS, BG, RES, CC, YP, Bardello BG, (RBT & Blue Tilapia - seasonal).