Dwarf Crayfish Molted - Is It Ok To Change Water?

Discussion in 'Crayfish - Crawfish' started by sheehanje, Apr 8, 2017.

  1. sheehanjeValued MemberMember

    My crayfish just molted for the first time, right before I was getting ready to do a water change. Is it still ok to do so? I hope so, it's a 75 gallon that I do RODI water in, so I made 25 gallons of water - the nitrates are really high right now (between 30 and 40ppm) - so I wanted to do two 40% water changes in the next couple days to get them down to normal levels.

    sammy molted.jpg
  2. Secret OasisValued MemberMember

    Im not sure on the water change, but be careful on how low the kh and gh get by using RODI water as if it gets to low the crayfish might have issues molting and die. It recently happened to Aquapros although his kh was super low but it happens.
  3. sheehanjeValued MemberMember

  4. KimberlyGFishlore VIPMember

    Yes, you can do the water change. The nitrates would be far more harmful. (pour the water in away from where he is hiding and hardening)
  5. sheehanjeValued MemberMember

    He didn't pick a great hiding spot for himself - side of the tank next to some driftwood, but very open. I put 3 upside down flowerpots in the tank for him thinking he would go there.

    Do you think any of my stock would hurt him?

    2 Juvenile angelfish, 1 dwarf gourami, 1 apisto borelli, 7 emerald green corys (know they won't), 5 otos (know they won't), 1 apple snail (was told it was a mystery snail, definitely not), 4 golden zebra danios.

    I actually worry about the apple snail getting on his molted shell.... Any idea how long the process of him recovering takes? New to crayfish. I had him in a 10 gallon, but a 2 year old my wife was babysitting decided to throw a whole container of shrimp pellets in it. Even after fully emptying the tank, scrubbing it and replacing the gravel, the nitrite and ammonia skyrocketed - probably from the food debris that got into the filter. So I moved him into the 75 gallon. The only other tank I have is a fluval edge 6 gallon with 2 dwarf pea puffers in it.
  6. KimberlyGFishlore VIPMember

    Oh dear, I wouldn't wouldn't be comfortable for my electric blue with my dwarf gourami. If you slowly put your hand in and move it tword him, where does he scurry?
  7. sheehanjeValued MemberMember

    he doesn't - he's in between some driftwood. The DG has been leaving him alone so far.
  8. KimberlyGFishlore VIPMember

    I would try to get that 10 cleaned up and put him back in there. (I know that is not possible right now). A couple of days and they are good.
  9. KimberlyGFishlore VIPMember

    That's nerve wracking, I'm so sorry. Maybe lights off early? My cray moves around in the dark, my DG not really. (Cray has her own tank)
  10. sheehanjeValued MemberMember

    Here is the current situation:

  11. sheehanjeValued MemberMember

    He's been in there 4 days, I haven't seen the DG have any aggression towards him - or even show any interest in him. He's usually getting into short spats with the Angelfish, but nothing major. He's fairly chill - the only time I've seen him get real aggressive is when I brought up the tank to 80 degrees over the course of 3 days. Think it set him in the mood. I ended up dropping it back down to 77.5

    The only fish that has shown any signs of aggression is the Borrelli followe him the first day I put him in, and nipped his tail. That was it. The danios harrass him a little, but more annoyance then aggression - he actually tries to ambush the danios - funny to watch.
  12. KimberlyGFishlore VIPMember

    He should be able to protect himself there. I thought he was a Mexican dwarf (1.5-2 inches full grown), he looks like a tangerine. Beautiful guy.
    Last edited: Apr 9, 2017
  13. sheehanjeValued MemberMember

    I actually had the lights off before I turned them back on to take that last picture. I just dropped wafers to the other side of the tank - the DG loves hikari algae waffers - almost as much as the cory's. Strange little fish that one is.
  14. KimberlyGFishlore VIPMember

    I have to drop wafers after lights out or my corys would never eat. (Yes, my gourami loves them)
  15. sheehanjeValued MemberMember

    I thought this was a mexican crayfish. Yikes. Tangerines get aggressive, don't they?
  16. sheehanjeValued MemberMember

    My cory's eat right next to the gourami. I usually drop 3 wafers and they are mostly gone in 20 minutes - the apple snail devouring anything left over.
  17. KimberlyGFishlore VIPMember

    How big is it? (Actually what did you pay, that will tell. lol)
  18. sheehanjeValued MemberMember

    I would say he's just under 2 inches. I paid $12.
  19. KimberlyGFishlore VIPMember

    That is going rate for a Mexican Dwarf. They get 2" max and he looked bigger to me plus you said it was his first molt since you got him so i figured he was young. I think he is bigger than my Electric Blue that will get about 5". Aggression is about the same actually, it's just that Tangerines, White Spectres and Electric Blues have bigger bodies to work with.
  20. sheehanjeValued MemberMember

    Actually, just estimated again with a ruler - and he's more like 2.5 inches. Also found my receipt - I paid $14.99 for him.

    Looking at all the pictures I can find of both the CPO's and tangerine - he definitely looks more like the photos of the CPO's - with his claws not as pronounced and a lighter coloration - but based on size, maybe he's not a dwarf at all. I really trust nothing my LFS says anymore.