I moved the frogspawn up a little to a area off the sandbed. whats crazy is did a water change saturday and have been dosing 2 part daily in small amounts to keep my alk up. my 2 part has magnesium in it.your mag is low, may not be the exact cause but i would retest a few hours after the water change and dose accordingly. it doesnt look too concerning to me, possibly adjusting to light and flow.


