New leather in tank, T5's it is situated 200mm from the top of the tank (5x2x2) tank

In average water flow...

Any reason or do they do this when theyt feel like it. It looked fine yesterday after I put it in the tank.

Welcome to the world of leathers ,they can be a bit finnicky leave it alone It'll come right.

They should be ok, may take a day or two to open, just make sure they get good water flow.

could check KH, salinity?

What should the salinity be ?

1.022 - 1.024

1.024-1.025,

.022 - .028

Pies

What lighting was it under when you got it?

Might need to move it down for a while. Mine sometimes closes for a couple of days.

Mine seem to close up if you walk past the tank in a grumpy mood. So, no surprise they'll close up if you put them in a new tank.

.25 to .25.

Should try to keep stable as possible.

itll take a few days depending on the leather, some of mine opend straight away while other took a month to settle in properly

wouldnt worry about it too much, mine still alternate between being open and closed all the time. seems that when i try and get the conditions right for acro's (ie: higher calcium/kh) , the leathers arent happy. if i try and get conditions right for leathers (ie: lower calcium, moderate kh) then acro's aren't happy.

Fluke Chim my leathers are open 99% & my acros seem happy enough.

What species is it ?

Hi ya Duke, hows the leather looking?

Mine sometimes does that, i've even got one that has reseaded due to the salt levels being to high (1.030) but now i've brought it back down to 1.025ish it's come back out and expanding again.

What do you use to check your salt levels?, i was using a glass Hydrometer for ages and didn't know my salt levels were way high until i purchased a refractometer, i'm not saying go out and bye one but if you know someone that has one get them to check your water as i've heard a lot of people down here in chch had level around the 1.030 mark when they tested their water with the refractometer.

Leathers are pritty hardy anyways.

Kermit