I've heard they're really easy or really hard I just don't want him to totally hate life if I can help it. Phosphates were .4 and I heard they can be really sensitive to those so did a water change and need to retest now. Alk was 9 so upper end of the range but in it... Calc 410, mag 1410, nitrates 9.4I've got a couple that are irritated most of the time no matter what I do.
What are your parameters looking like? Alk, calc, mag, phosphates, and nitrates.