Jump to content

Crystal reds/black bee not breeding

richiep

By richiep
in Shrimp Health & Care

 Share

Recommended Posts

sdlTBfanUK Shrimp Master

sdlTBfanUK

Posted
Posted

Are you saying then that the red crystals (or any other Caridina shrimp) have bred in the 220L before ok? If so then it probably can't be the 'winter' process I guess. I would probably still set up the smaller tank for selective breeding and try the 'winter' on the bigger tank I think, relating to the original problem.

My 35L tank hovers around 100-120 shrimps, if I cull some, more come along and it stays at that level so I assume my maximum figure is that, thats fine with me as thats plenty enough! If it is down to maximum occupancy then I guess you need to cull the weakest coloured ones to get more good colour ones?

The slight TDS increase may be due to evaporation. When topping up you should use pure RO water, no mineralisers. Other option is to just adjust when you do the water change, which is what I believe you do now.

Simon

5 minutes ago, richiep said:

heres the food i use along with regular bloodworm and all sorts of veg1136995379_shrimpfood2.jpg.5a347d92b60abfc8066d92c7b5eff07f.jpg

OMG! I hope you eat as well as your shrimps do?

Simon

Link to comment
Share on other sites
jayc Shrimp Guru

jayc

Posted
Posted
4 hours ago, Kingo said:

what do you mean by properly?

 

2 hours ago, richiep said:

when you say reminerilise properly says to me I'm doing it wrong which I dont understand

I mean ... remineralise to a suitable TDS, GH, KH level for the type of shrimp you keep in the tank. 

I'm not saying you are doing it wrong.

 

2 hours ago, richiep said:

so how dose anyone know what the correct minerials are and whats lost

That's why I suggested changing most of the water. We don't know what is missing. So safer to just reset it.

 

 

  • Like 1
Link to comment
Share on other sites
richiep Shrimp Enthusiast

richiep

Posted
  • Author
Posted
1 hour ago, jayc said:

 

I mean ... remineralise to a suitable TDS, GH, KH level for the type of shrimp you keep in the tank. 

I'm not saying you are doing it wrong.

 

That's why I suggested changing most of the water. We don't know what is missing. So safer to just reset it.

 

 

ok jayc that's my crystal tank we are talking about, perameters are ph 6.6 gh5  kh1 tds 96 temp 23c are you saying this is wrong for that shrimp? the othe photo i posted was of black bee taken from the same tank a few months ago with water,plants,filter from my crystal tank, their perameters stand at ph6.5 kh1 tds 119 temp22.5c they are breeding like rabbits and this it what i dont understand at all . what do you suggest the perameters should be

Link to comment
Share on other sites
sdlTBfanUK Shrimp Master

sdlTBfanUK

Posted
Posted

The TDS if it is 96 may well be the problem, the usual range is about 120-180? Mine is around 160! If the blacks at 119 are breeding then maybe try increasing the tds to at least that, but gradually over several days to a week?

Simon

  • Like 1
Link to comment
Share on other sites
richiep Shrimp Enthusiast

richiep

Posted
  • Author
Posted

i think 119 is due to the tank size. when mixing gh+ to ro water for me to get a gh of 5 my tds is 96 in my cherry tank a ro water mix for a gh of8 results in a tds of 200, explain how to get a gh of 5 in ro water and tds between 120 180,

Link to comment
Share on other sites
jayc Shrimp Guru

jayc

Posted
Posted (edited)

As sdlTBfanUK mentioned, try bringing TDS & GH up a bit. GH 6 and TDS 120-130, or around that. Your tank might be low on calcium. 

Edited by jayc
  • Like 1
Link to comment
Share on other sites
sdlTBfanUK Shrimp Master

sdlTBfanUK

Posted
Posted

In purely mathematic terms if TDS200 is GH8, and that sounds correct, if you divide 200 by 8 you get TDS 25 per 1GH, again, about right with how mine calculates/runs. 5 (GH) times 25 (TDS) is TDS125 so would be perfect. Try remineralising just using the TDS figure, it will be much easier anyway, and the remineralisers are balanced for GH&TDS that the shrimp need . As JayC says you can try GH6 and that will be fine, mathematically that should come out at TDS150 - those are the figures at which my tank runs (checked yesterday and TDS158, GH6)!

Simon

  • Like 1
  • Thanks 1
Link to comment
Share on other sites
beanbag Shrimp Lover

beanbag

Posted
Posted

Can I ask again, what are the water parameters of:

a) tank where shrimp breed

b) tank where shrimp don't breed

c) freshly remineralized RO water

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing

  • Join Our Community!

    Register today, ask questions and share your shrimp and fish tank experiences with us!

  • Must Read SKF Articles

    Shrimp Disease and Treatment
    Tibee, Taitbee, Pinto, Mischling, F1, F2

  • Tropical Fish Forum
    Discus Breeding Guide
    Discus Disease and Treatment Guide

  • Posts

    • ngoomie
      Shrimp and meds containing gentian violet

      By ngoomie · Posted

      Alright, I've done a bit more research on gentian violet's cancer-causing potential but I haven't yet done research on malachite green's to compare. But from reading the California propositon 65 document about GV (North Americans incl. some Canadians will recognize this as the law that causes some products they buy to be labelled with "known to the state of California to cause cancer", including the exact product I bought) it seems that the risk of cancer is related to internal use, either injection or ingestion. Speaking of ingestion, I think GV bans mainly relate to its use in treating fish/shrimp/etc. which are intended for human consumption, because of the above. And in countries where GV isn't banned for this purpose, it does seem to get used on various species of shrimp without causing any issue for the shrimp themselves (at least enough so for shrimp farming purposes). See the following: In February, the FDA Began Rejecting Imported Shrimp for Gentian Violet and Chloramphenicol (2022 article by Southern Shrimp Alliance) FDA Starts New Calendar Year by Refusing Antibiotic-Contaminated Shrimp from Three BAP-Certified Indian Processors and Adding a BAP-Certified Vietnamese Processor to Import Alert (2024 article by Southern Shrimp Alliance) Southern Shrimp Alliance and some other organizations have tons of other articles in this vein, but I'd be here for a while and would end up writing an absolutely massive post if I were to link every instance I found of articles mentioning shrimp shipments with gentian violet and/or leucogentian violet registering as contaminants. That being said, I know shrimp farmed for consumption and dwarf shrimp are often somewhat distantly related (in fact, the one time a shrimp's species name is listed that I can see, it's the prawn sp. Macrobrachium rosenbergii, who at best occupies the same infraorder as Neocaridina davidi but nothing nearer), but this at least gives a slightly better way of guessing whether it will be safe for aquarium dwarf shrimp or not than my bladder snail anecdote from the OP.
    • sdlTBfanUK
      Shrimp molting before eggs are hatched

      By sdlTBfanUK · Posted

      I would hazard a guess that perhaps those eggs were unfertilized and thereby unviable? Did the eggs change colour, usually yellow to grey as the yolks used up, or any eyes in the eggs. Is your water ok, using RO remineralised and the parameters in range, as I have heard others say that if the water isn't good it can 'force' a molt? How is it going overall, do you have a good size colony in the tank, you may have reached 'maximum occupancy' as a tank can only support so many occupants.
    • beanbag
      Shrimp molting before eggs are hatched

      By beanbag · Posted

      Hello folks,  The current problem I am having is that my Taiwan bee shrimp are molting before all their eggs have hatched.  Often the shrimp keep the eggs for 40+ days.  During that time, they lose about half or so, either due to dropping or duds or whatever.  Shortly before molting they look to have about a dozen left, and then they molt with about half a dozen eggs still on the shell.  Then the other shirmp will come and eat the shell.  These last few times, I have been getting around 0-3 surviving babies per batch.  I figure I can make the eggs hatch faster by raising the water temperature more (currently around 68F, which is already a few degrees higher than I used to keep it) or make the shrimp grow slower by feeding them less (protein).  Currently I feed Shrimp King complete every other day, and also a small dab of Shrimp Fit alternating days.  Maybe I can start alternating with more vegetable food like mulberry?  or just decrease the amount of food?
    • ngoomie
      Shrimp and meds containing gentian violet

      By ngoomie · Posted

      Yeah, cancer risk was a thing I'd seen mentioned a lot when looking into gentian violet briefly. I kinda just figured it might only be as bad as the cancer risk of malachite green as well, but maybe I should look into it more. I've been doing a pretty good job of not getting it on my skin and also avoiding dunking my unprotected hands into the tank water while treating my fish at least, though. Maybe I'll just not use it once I'm done this course of medication anyways, because I know a store I can sometimes get to that's pretty distant carries both malachite green and methylene blue, and in pretty large quantities.
    • jayc
      Shrimp and meds containing gentian violet

      By jayc · Posted

      Can't help you with Gentian Violet, sorry. It is banned in Australia violet for potential toxicity, and even possible cancer risks. I thought it was banned in Canada as well. At least, you now know why there isn't much info on gentian violet medication and it's use. But keep an eye on the snails after a week. If it affects the snails, it might not kill them immediately. So keep checking for up to a week. Much safer options out there. No point risking your own life over unsafe products.
×
×
  • Create New...