Reply With QuoteI think you should stop all this liao lah...cannot bear to see all the fish dying.
ok: my 2 ft tank,
after all my guppies died, today found a panda cory dead + 2 cory pygmaeus dead.
went down to c328, bought 4 guppies, 10 clown killies, 10 pencil fish, 3 platies.
(I did 50% water change yesterday).
I took out somewater from the tank, put it in a bucket, put all the fish in, added myxaxin (broad spectrum protozoacide/bacteriocide)
I also put in about 10 malayan shrimp into the tank
at 3am, I checked the bucket, 3 guppies died. 2 platies died. + 1 of my existing red platy
all 10 shrimp died.
---
went to do a 50% water change again and change water.
either I have a guppy/platy/shrimp killing disease prevalent in that tank or something.
take note that I have a sulphur denitrator, even if its sulfate toxicity, the fact that I did a 50% water change will probably eliminate that as a cause.
other fish in the tank (before introduction of new fish)
2 kuhli loaches
2 oto
3 chocoloate gourami
3 honey gourami
2 red platy (1 died)
2 panda cory (1 died)
2 pygmy cory (both died)
15 guppies (all died over the last week)
-------------------------------------
the 4ft guppy I checked this morning is dead.
1 kuhli loach might be dying (saw labored breathing before I left for work).
--
I'll be unhooking the denitrator tonight, to see if there's a link.
I think you should stop all this liao lah...cannot bear to see all the fish dying.
Plant Physiology by Taiz and Zeiger
Chris, I think the S denitrator may be the culprit.
2 deadly by-products may come out the the denitrator if the flow rate is not optimised... H2S and NO2. NO2 is the more likely one.
Test your water for NO2 immediately!
BC
hmm. k. how come flow rate not optimised? heh.. its passing out through a 2026, the flow is strong enough to form a whirlpool..
will test everything tonight..
The S denitrator will give NO2 is the flow rate is too high. The reason is that there is not enough dwell time for the NO3 to be fully reduce to N2. NO3 is only partially reduce to NO2.
OTOH, when the flow is too slow, it will form H2S.
When running correctly, you will see N2 gas being release from time to time. It is quite tricky to run a S denitrator. The denitrator will also release CO2... another thing to look out for.
BC
Resistance is futile, you will be administrated!
Chris,
Looks like you might have to rig up a bypass if you still want to experiment with it. Use the taps to control the flow.
Code:tank / filter / splitter---tap / / / de-nitrator / / splitter---tap / 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.
bc's post applies to all denitrators, not just the sulphur ones
trust your plants instead
got back:
nearly all the new fish bought the day before died
2 dead peppered corys (bought yesterday), 3 balloon, 3 clown killies, 4 apple snails.
yeah. I checked it. its no2 0.25 ppm, did 150% water change.
funny thing, i don't get the same effect in my 4ft. maybe its more heavily planted.
although I'm having weird things with my archer fish, and blackghost. case of fungus on it.
looks like I probably need to dismantle the sulphur denitrators.
ok: this morning, no new deaths (from new fish)
--
will monitor nitrite levels for a while, I've reduced the output flow of the 2026..
ok: the 2ft tank no problems so far,
the 4ft tank now has a problem.
discus fish are developing cloudy eye or something like that. archer acting like got swim bladder disease (which happened before but was cured once)
numerous fish deaths.
2 butterfly fish, 2 harlequin, 1 black ghost, 1 pictus catfish.
they all have this white film on them.
its already second day of treatment with myxaxin
nh4=0, no2=0,
did not test ph yet, co2 is not being injected cos canister was emptied since tuesday, strong aeration with airpump right now.
suspect its a disease outbreak with nothing to do with the denitrator.
I'm pondering whether to get a microscope to do some pathology.
(or anyone has one 100x will do..heh)
based on the sera chart
http://www.sera.de/autoframe.htm?url...osetabelle.htm
Costia necatrix
2ft tank. 3 dead guppies. tested no2, yes 0.25 present.
4ft tank
2 dead archers, 3 dead otos numerous dead shrimp, cardinals, bumblebee, 1 dead angelfish
no no2
eyes of 1 discus complete clouded over on both sides. fins of all discus are clamped and frayed.
--
will be removing denitrator tonight. cleaning filter, 100% water change. then treatment with protozin
Total Massacre of fish huh? Don't you feel bad using those innocent creatures for your test? []
Plant Physiology by Taiz and Zeiger
I'm almost positive that the denitrator has nothing to do with the fish death. I've had the denitrator running for over 1 mth with nothing really really major.
until today.
more deaths. found 4 apistos dead (leaving me with just 1 left)
I suspect.
a) initial outbreak of disease.
OR
b) biproducts of the medication, its possible that the denitrating bacteria are converting the myxaxin to something toxic.
c) simply treating the original disease with the wrong medication, allowing the disease to run rampant.
I've moved my three discus into treatment tank. all of which have major popup. both eyes are clouded, each eye probably gain an extra 5mm of width. fins are ragged (ie: fin rot). treatment: protozin + salt + heater at 30c
tearing the tank down. cos during water change I accidentally disturb the substrate, so that the water turned black.
I fished up all my fish into another bucket. yes, there isn't 200 malayan shrimp. more like 10.
so 190 died on tuesday,wednesday...huge organic load thereafter...
ok: whole tank torn down. no plants, no fish. all fish moved to 2 ft for treatment, discus into a 30d heated bucket of salt/protozin as well.
current tank is at half water + half a bottle of hydrogen peroxide, fish nets and siphons thrown away.
incidentally, I sucked at the filter output of a 2028 to prime it, some of that icky white stuff went into my throat, got sore throat and fever now..grr..
(but I'm not showing symptoms of pop eye,cloudy eye or slime..)
Should have been more careful lah...maybe should invest in self-priming filter better...its worth the money. []
Plant Physiology by Taiz and Zeiger
Baton courtesy.....service with a smile!
2028 got priming aid wat, why u need 2 suck the pipe?
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chris
from your S denitrator thread it looks like your problems started when u added the thing to your system
nah, it shouldn't take 4 weeks for the problem escalate. considering that I do do water changes. (Like 50% weekly)
in anycase, I've torn down everything, and basically redoing the tank. check if aquamart have fluorite from their distributor.getting 6 packs.
my 2ft's existing fluorite gravel will also be moved to my 4ft after I sterilise it, replacing it with nisso volcanic soil...
I also noticed that the green horti sticks in my substrate tend to result in black anaerobic regions, I suggest maybe people use the red variety instead. (no sulphur)
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