Folks, if you've recently upgraded or renewed your annual club membership but it's still not active, please reach out to the BOD or a moderator. The PayPal system has a slight bug which it doesn't allow it to activate the account on it's own.
Here is a picture to show you the size of my dolomite. I just looked for a picture of this set up and it is not on RC anymore so if you need a picture, I will have to take one. But any system where you can push about 50 gallons an hour of filtered water under the gravel will work.
Also for all...