CRS shrimplets gone in 1 week

[Sheng_Ge]

Hi all,

I have a new tank for S grade crs and have been cycled for more than 2 months. I introduce the shrimps in and they are all doing fine. One of the females got berried and hatch quite a handful of new shrimplets. I saw 6-10 shrimplets moving around for week and suddenly all of them just disappeared. For days now, I couldnt even find 1 of the shrimplets. Have they all died? But the adult shrimps are eating and swimming normally. Why is this so? :bs_help:

My water parameters are as follows:

1) PH = 6.8 - 7
2) GH = 3 °dGH(is it too low? if so, how do I increase the GH?)
3) NO3 = 0 mg/l
4) Temperature = 25°C

Water changes: once/week, 10-20% change, tap water are treated with de-chlorine.

Thanks,
Sheng

[JohnPaul]

I've never kept CRS myself, but I've talked to quite a few people who have tried CRS breeding--some with success and some without. After reading your post, the first thing that came to mind is that your pH is really borderline-high for CRS. Two people I talked to who tried to breed CRS in slightly alkaline conditions reported something similar to what you wrote: they would get shrimplets, but the babies would never survive.

So it could be that your pH of 6.8-7.0 is just a bit high for the babies.

[Dungmvp]

pH 6.8 - 7 is just fine but better with 6.5 - 6.8, even 7.2 - 7.5 is ok but just few shrimplets grow up. I think you should check for NH4, NO2 before NO3. NH4 and NO2 must be 0, I think your tank has been cycled for 2 months so NH4, NO2 shoul be 0 but there should be some NO3 left in the tank instead of what you said is 0.
What brand of de-chlorine and substrate are you using? You may want to lower temperature at 23 - 24 because if higher than 25 it will harm your shrimps if the water is not so good.

[silane]

Hi all,

I have a new tank for S grade crs and have been cycled for more than 2 months. I introduce the shrimps in and they are all doing fine. One of the females got berried and hatch quite a handful of new shrimplets. I saw 6-10 shrimplets moving around for week and suddenly all of them just disappeared. For days now, I couldnt even find 1 of the shrimplets. Have they all died? But the adult shrimps are eating and swimming normally. Why is this so? :bs_help:

My water parameters are as follows:

1) PH = 6.8 - 7
2) GH = 3 °dGH(is it too low? if so, how do I increase the GH?)
3) NO3 = 0 mg/l
4) Temperature = 25°C

Water changes: once/week, 10-20% change, tap water are treated with de-chlorine.

Thanks,
Sheng

Your water parameter seems ok, although the ph is abit on high side. S grades are not extremely demand on water parameter, so is ok.

Second supsect is your water is bad, has toxic by something or somewhere, this one is a bit hard to catch. If mild toxic, can use Mosura Old Sea Mud powder to remove the toxic.

Third suspect is your tank may not biologically balanced, micro oganism is not doing well in your tank. Use Mosura Bioplus to improve level of bio activity and also the micoorganism provides as a food source to newly born shrimp.

[Sheng_Ge]

I'm using Genesis de-chlorine and GEX soil. However, I top up with some ADA soil recently in hope to bring down the PH.

I already have Mud rock and mineral rocks inside my tank. Do I still need to Mosura bioplus and the mud rock powder?

Some of the S grade shrimps are really white n some are faded. If water is bad, why does it only affect some shrimps and not all?

[Rabbit]

Some of the S grade shrimps are really white n some are faded. If water is bad, why does it only affect some shrimps and not all?

just like when someone sneezes, not everyone in the room will end up sick, only the weaker ones. does it make sense?

[Crazy4Shrimps]

However, I top up with some ADA soil recently in hope to bring down the PH.

Did you check your ammonium, nitrite and nitrate level again?
New ADA soil always contain high level of such content.

[Crazy4Shrimps]

Actually there are a lot of ways to bring down pH safely.
I add CO2 to bring down my pH. Some people dose pH minus to their tank weekly (I only dose pH minus when the pH in my tank is ridiculously high).
Adding a small piece of drift wood also helps.

[booyamoon]

I breed CRs in ph 8 water :D - just to let you know, your ph is fine but still may be the problem.

it always depends from what water conditions they come or were bred in.

[Sheng_Ge]

Did you check your ammonium, nitrite and nitrate level again?
New ADA soil always contain high level of such content.

I didn't check the nitrite or ammonium after I add the soil. I just measured, NO3 is at 0. I'm using SERA, not sure its if accurate. After adding a layer of thin soil to some part of the tank, the PH is still at the high side, 6.8-7. Maybe I could just add some drift wood.

How about my GH? It is only 3. Is it a concern? I heard people saying that their GH was around 4-10? How do I increase GH?

[prawny]

you can increase GH by added mineral rocks? the GH in my tank increased after adding some.... it lowered he ph as well....

[Sheng_Ge]

you can increase GH by added mineral rocks? the GH in my tank increased after adding some.... it lowered he ph as well....

How many should I add? Will there be side effect if too many mineral rocks or mud rocks are added in? My tank is a 3ft tank. Pls advice on how many such rocks should be added?

[prawny]

erm try not to add too much....
i have a 1.5 ft tank... using 2 small rocks about 1.5inch by 1 inch by 1 inch...
my GH is now 60, Ph is 6 using the API 5 in 1 test strips...

[Nasty12]

How many should I add? Will there be side effect if too many mineral rocks or mud rocks are added in? My tank is a 3ft tank. Pls advice on how many such rocks should be added?

bro, better use old sea mud powder form, it is more stable and very economical. It make my water 2 hours after dosage, it used to take 8 hours to clear at the first few application. I can see my shrimps more active after using.

I found that the rock form can affect the water differently, sometime cause the pH to drop, sometime no, very unpredictable.

[Sheng_Ge]

Hi guys, I bought Mosura Bioplus, Shrimp Tonic, Mineral Plus and Old Sea Mud Powder. I'm not sure if they can be used together or not. However I still dosed my 3 ft tank with all of the above. Not sure how will it turn out. Anyone tried using all of the Mosura products?


bro, better use old sea mud powder form, it is more stable and very economical. It make my water 2 hours after dosage, it used to take 8 hours to clear at the first few application. I can see my shrimps more active after using.

I found that the rock form can affect the water differently, sometime cause the pH to drop, sometime no, very unpredictable.

I added 2 spoons of the old sea mud powder and the water is cleared almost immediately.

[prawny]

oh.... is it really good? this mosura old sea mud powder?... what does it do to your water parameters and how do you dose it?
my water always seems to have a film of oil on the surface

[Sheng_Ge]

oh.... is it really good? this mosura old sea mud powder?... what does it do to your water parameters and how do you dose it?
my water always seems to have a film of oil on the surface

I just started to use it, so far so good. It doesn't alter my PH at all. I just scoop a spoonful and dump it into my tank. It will sink rapidly to the bottom without messing up my tank. Within minutes, the water is cleared.

Film of oil? I had this problem last time. However, after adding in floating plants, I realised that the layer of oily stuffs is gone. I'm not too sure is it because of the floating plants. Anyone any ideas?

[prawny]

I actually have add some floating plants awhile back a piece of frogbits? those little lily pad plants? and i think it's called salvinia natans.... have 2 patches floating around..... still have the oily surface phenomenon.... guess i'll wait and see if it clears....