I just went back and re read the beginning of this thread.
Thats where people were saying my tank was full of cyano
It really did look like that. Now there is almost no algae in there except in my algae trough.
It was not supposed to be a thread about my tank, it just turned into that, it was a thread about reef health or signs of a healthy tank.
The biggest sign of a healthy tank is if fish are spawning or at least making spawning jestures. Fish do three things, eat, spawn and poop.
Eating is of course important but that just means the fish is living.
Spawning or attempting to spawn (if you have a fish that can do that in a tank, no tangs, engels etc) is a sign that everything is great. Fish, unlike us can not spawn unless they are in excellent shape. We can eat potate chips and drink beer for years and still "spawn" fish can not.
It takes some energy for a fish to stay alive but it takes a lot more energy for a fish to produce eggs which are mostly oil.
Fish produce this oil but they need to be fed a food that has some fish oil in it. I use live blackworms, fish eggs or fish oil on pellets.
A fish in breeding condition is also "almost" immune from many diseases including paracites, No really. I know most of you don't believe that but it is what it is.
So if our fish are not building nests or at least biting us when we put our hand in there, the tank is not as healthy as we think.
There are of course other factors that allow a fish to spawn besides food but that is a big one.
Another sign of a healthy tank is seeing all sorts of life crawling around in there. I am lucky that I live near the sea and I can collect a lot of stuff but there should at least be pods and spaghetti worms and a little algae.
Sorry to start up this old thread but I came across it and realized it is mostly about my tank, that was not the reason for me to begin this thread.
So have a great day.
Paul