OK. Now I will share that I was using Hikari products and suspect them to be the cause of my problems. Algea wafers in my tropical and Oranda Gold in my goldfish tank tank. If you go back through my other thread about sluggish growth you will see all the main factors are covered. I have since switched to RODI water.
First, there is now no question that the Hikari products raise your GH level. It is not surprising if you look at the ingrediants which contain Magnesium Sulphate which is the main ingrediant in GH booster. Amazon swords just withered and slowly died in my tropical tank. Since I stopped feeding with Hikari wafers in the tropical tank, the GH is stable, and a new sword is still bright green. The food is the only change I made.
In the goldfish tank, my weekly diatom overgrowth is gone and all I I did was switch from the Oranda Gold pellets to some generic flake product I had laying around.
So again, people with nice lush planted tanks, which exact fish foods are you using?