Indoor pond with nitrate troubles - by Doc Johnson It's hard to have enough..
Aeration - Oxygenation of Pond Water Aeration - by Doc Johnson "Warm water carries..
Ammonia - The Essentials [caption id="attachment_195" align="alignleft" width="300"] Knowing about water quality is the..
Water Changes Are Critically Important A Word About Water Changes - by E L..
Lymphocystis - by Doc Johnson Of all the viruses affecting Koi, the fifth most..
Understanding Gravel Bottom Ponds This has been my tenth year with a gravel-bottom pond...
AquaScapes gravel bottomed pond installations - by Doc Johnson Wildly popular and easy for..
This is one of the filters which I [Dr. Johnson] have used extensively at..
Activated Carbon - Charcoal Activated Carbon - Detailed information - by Carl Gittings This..
Intercepting Fish Disease Written by Frank Prince-Iles Prevention is better and cheaper than cure!..
This is an EXTREMELY old article. But it was written during active fish medicine..