Unhappy frogspawn, but happy hammer???

[MontanaReefer406]

Hi, I have been having troubles with my frogspawn. I was hoping to grow a big colony but the heads on some frags seem to be receeding. The tentacles barely extend and stay very short. However my hammer coral is doing very well and extends well too.

This is in my low tech nano tank. I am good about waterchanges and testing. Lately been looking close at Ca and Alk. (Tad low but not bad, did waterchanges.) But I am not sure if it is lighting, flow, picked at by shrimp, e.t.c. why is the frogspawn not happy but its brother, hammer, doing well? Thoughts???

Thanks,
Sam

 

[steallife904]

could be flow, they don't like a lot of direct current. Are you feeding them, they like to eat. Could be shrimp!
I do not keep shrimp anymore because they would always take the food from my lps and irritate them forcing them to stay closed up.

 

[MontanaReefer406]

could be flow, they don't like a lot of direct current. Are you feeding them, they like to eat. Could be shrimp!
I do not keep shrimp anymore because they would always take the food from my lps and irritate them forcing them to stay closed up.

I have them in some indirect flow, and dose a little reef roids weekly. My shrimp will pick food away from corals, but they generally open back up right away. My frogspawn can stay closed up for long periods of time.

 

[steallife904]

if the shrimp is always pulling food away and its never getting to eat...……. and maybe the shrimp is doing it more to these ones???