Yes! very important also....
"rapdor" wrote in message
...
thats encouraging do you add extra iron supplement?

"gizmo" wrote in message
...
I have a 100 gallon tank PH oh 7.4 lush green leaves.
I also know that plants can use iron at higher PH levels....

gizmo
"rapdor" wrote in message
...
Greetings I'm trying to create a heavily planted freshwater tank
and
read that iron deficiency is commonly a problem. Also that pH above 7
causes plants to be unable to use the iron that may be available in
the
tank. So maybe I should buy an iron test kit. But before doing so,
I'd
like to know more about what they actually measure. I mean, how
meaningful
is the raw number the test kit will give? Any advice much
appreciated.