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Thread: The 'Aftermath'

  1. #21
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    Devil's advocate... it really proves nothing much. Try another batch of shrimp with proper acclimatisation and see if they perish. Then you can say whether it's truly due to the pH difference or something else in the tank.
    Vincent - AQ is for everyone, but not for 'u' and 'mi'.
    Why use punctuation? See what a difference it makes:
    A woman, without her man, is nothing.
    A woman: without her, man is nothing.

  2. #22
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    Vinz, the shrimps were tested by several batches of 20 for O2 deficiency, nitrite and Nitrate. But I agree got to wait for the next trial before I finalise the verdict. sorry for jumping the gun, folks. I'll be back. Ot a little, by the way anybody tried Seachem equilibrium? Is it useful in this situation? Thanks.
    Something about the water & the fishes that calms me down.

  3. #23
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    Michael, is it the tank that you posted in the aquascape section with the issue?

    Regards
    Peter Gwee
    Plant Physiology by Taiz and Zeiger

  4. #24
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    Hi Peter,
    Unfortunately it is, if you look at the 1st picture you can still see a dead shrimp. Any proposals?
    Something about the water & the fishes that calms me down.

  5. #25
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    Pottassium overdose? Apparently shrimp are sensitive to this Macro fert?

    How about the Temps, is it very warm in Singapore right now (or is that a silly question )

    Unless something in the tank is chomping on them? With all the dying BBA perhaps also your ammonia levels are high?

    Regards
    Cameron

  6. #26
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    Quote Originally Posted by michael lai
    Hi Peter,
    Unfortunately it is, if you look at the 1st picture you can still see a dead shrimp. Any proposals?
    Have some surface movement. Its fine if you lose some CO2 but the surface movement does add O2 in from gas exchange 24/7. I'm guessing from the look of the pictures that you do not have any at the moment?

    Regards
    Peter Gwee
    Plant Physiology by Taiz and Zeiger

  7. #27
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    I'm actually having alot of surface action because the fan is very near to the water surface plus the addition of a powerhead with air intake for night use. O2 shortage is therefore rule out. sigh...
    Something about the water & the fishes that calms me down.

  8. #28
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    Quote Originally Posted by Happy Camper
    Pottassium overdose? Apparently shrimp are sensitive to this Macro fert?

    How about the Temps, is it very warm in Singapore right now (or is that a silly question )

    Unless something in the tank is chomping on them? With all the dying BBA perhaps also your ammonia levels are high?

    Regards
    Cameron
    Hi Cameron,
    Not sure about potassium overdose but come to think of it all this started when I start to use Dr Mallick's fert, hmm.......might be worth exploring. Temperature here hovers around 30-34. We use fans to bring it down to around 27, quite safe for most shrimies. I'll go check it out on this potassium lead, thanks.
    Something about the water & the fishes that calms me down.

  9. #29
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    Quote Originally Posted by michael lai
    I'm actually having alot of surface action because the fan is very near to the water surface plus the addition of a powerhead with air intake for night use. O2 shortage is therefore rule out. sigh...
    I'm not sure if the surface movement from the fans is enough during the day but maybe you can consider adjusting the filter outlet such that there is a moderate surface movement. Just give it a whirl and see if things improve.

    Regards
    Peter Gwee
    Plant Physiology by Taiz and Zeiger

  10. #30
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    Ok, will give it a go, might even introduce one of Tom's (barr) diy powerhead Co2 diffuser later on. If all else fails, I'll have to tear the scape apart. I'm contemplating replacing the substrate as well from onyx to amazonia or malayan. I'm experiencing some problems with the substrate, it is 'compacting' and some of my crypts are suffering....
    Something about the water & the fishes that calms me down.

  11. #31
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    Quote Originally Posted by michael lai
    Ok, will give it a go, might even introduce one of Tom's (barr) diy powerhead Co2 diffuser later on. If all else fails, I'll have to tear the scape apart. I'm contemplating replacing the substrate as well from onyx to amazonia or malayan. I'm experiencing some problems with the substrate, it is 'compacting' and some of my crypts are suffering....
    mind telling more about the onyx sand problem?
    i was contemplating using onyx sand for my next tank

    btw, anyone has any comments about about dennerle quartz gravel as well?
    considering that too.

  12. #32
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    Quote Originally Posted by michael lai
    Ok, will give it a go, might even introduce one of Tom's (barr) diy powerhead Co2 diffuser later on. If all else fails, I'll have to tear the scape apart. I'm contemplating replacing the substrate as well from onyx to amazonia or malayan. I'm experiencing some problems with the substrate, it is 'compacting' and some of my crypts are suffering....
    The tank is "pretty packed" and good circulation might be an issue as well. How big is the tank and what filter are you using? Do you have additional source for water movement?

    The only thing that can kill shrimps are NH3, low O2 and a large change in "salt content" from the water it is from to the water you dump them in (osmotic shock). What is the KH of your tank water?

    Regards
    Peter Gwee
    Plant Physiology by Taiz and Zeiger

  13. #33
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    I've gone well over 100ppm with K+ andf with NO3, no impact on shrimps till get above 120ppm with NO3, never found any issue for any plant or fish/inverty for K+, many folks in the SF area dosed 50ppm K+ or more for about 6-8 years or so.

    Regards,
    Tom Barr

  14. #34
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    Quote Originally Posted by lee1224 View Post
    mind telling more about the onyx sand problem?
    i was contemplating using onyx sand for my next tank

    btw, anyone has any comments about about dennerle quartz gravel as well?
    considering that too.
    Hi lee1224,
    Some of my plants like crypts and criniums, the roots are turning black due to don't know what reasons. Not all of the crypts though, the beketti( I hope I got that right )is okay but the undulata just withered off. The 'Kraken' that you see now is planted in a plastic tub hidden from view. From the affected plants area when I pull out the sand was very 'fine'. That's why I came to this conclusion. This is only an assumption, there might be many other reasons.

    As for Dennerle quartz, please refer to my 4 footer scape, 'plug & play'. I've got no complain except maybe the price.
    Something about the water & the fishes that calms me down.

  15. #35
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    Quote Originally Posted by Plantbrain View Post
    I've gone well over 100ppm with K+ andf with NO3, no impact on shrimps till get above 120ppm with NO3, never found any issue for any plant or fish/inverty for K+, many folks in the SF area dosed 50ppm K+ or more for about 6-8 years or so.

    Regards,
    Tom Barr
    Thanks, Tom for that information. I'm quite bad with all this alphabets and numbers so sometimes you'll have to bear with me.
    Something about the water & the fishes that calms me down.

  16. #36
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    Quote Originally Posted by PeterGwee View Post
    The tank is "pretty packed" and good circulation might be an issue as well. How big is the tank and what filter are you using? Do you have additional source for water movement?

    The only thing that can kill shrimps are NH3, low O2 and a large change in "salt content" from the water it is from to the water you dump them in (osmotic shock). What is the KH of your tank water?

    Regards
    Peter Gwee
    Pete, I'm using a Ehiem 2215 plus a small powerhead( just added ). The tank is W900 x D450 x H600mm. Don't have a KH test kit now, I check on that later.
    Something about the water & the fishes that calms me down.

  17. #37
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    Quote Originally Posted by michael lai View Post
    As for Dennerle quartz, please refer to my 4 footer scape, 'plug & play'. I've got no complain except maybe the price.
    Hmm.. dennerle quartz is that ex???
    think i only ever checked out its price twice before
    1st time i saw was near 50 bucks a pkt at lfs A (no naming here on prices i guess)
    then I do recall seeing a certain lfs B selling it at $18 a pack.............
    thats 1/2 the price of a pkt of ada!!! and much cheaper than what i saw of its price the 1st time

    i remember that cause when i saw the price tag i couldnt really believe it
    and i checked with the shop owner twice! and he confirmed with me 18 bucks
    i was quite surprised...wondered if it was mis-priced

    too bad it was quite far from my home and i was jus passing by that day and browsing when i noticed the lfs
    was on the way to an appointment
    if not i probably might have bought a few pkts and lugged them home and congratulated myself on a bargain

  18. #38
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    Hi lee1224,
    The price is for a 10kg pack, I searched around and have never heard of a 10kg pack going lower than $40 bucks. It's 3 packets in one box. You might be looking at a smaller packing( 5kg ).
    Additional information.
    The sand is synthetic( man made ), does not affect water parameters, rounded( as in no rough edges ). One of the most consistent in terms of size and colour. But left a big hole in my pocket.
    Something about the water & the fishes that calms me down.

  19. #39
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    Quote Originally Posted by michael lai View Post
    Hi lee1224,
    The price is for a 10kg pack, I searched around and have never heard of a 10kg pack going lower than $40 bucks. It's 3 packets in one box. You might be looking at a smaller packing( 5kg ).
    Additional information.
    The sand is synthetic( man made ), does not affect water parameters, rounded( as in no rough edges ). One of the most consistent in terms of size and colour. But left a big hole in my pocket.
    even if its a 5kg pack its still slightly cheaper than what it should
    but i believe i saw a 10kg pack though
    hmm maybe i should go back to check it out and get myself a few bargains

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