anubias leaves turning yellow why?

First topic message reminder :

I have had several anubias plants and all the leaves evenually turn yellow. Now im told to keep them away from bright lights i keep them in only about 0.5 to 1.0 watts per gallon and I use flourish fert every week but still the leaves will turn yellow over time and I end up with nothing but really nice strong roots and no leaves can anyone tell me what im doing wrong? PH 7.8 temp 79

nice write up plant.

Thanks, I can do a write up. how do you want me to do it for the library?

Same as you did just a little more in depth if possible. And what the different signs are for the different deficiency.