GRRRRRRRRR I JUST LOST THE LAST ADULT GUPPY IN MY 75g
they have been dying steadily not even lasting a day in my aquarium
she was suposed to move to a new tank tomorow when it was completely cycled
i have noticed that this started hapening after i started treating with maroxy for fungus which is growing on my red swordtail (Red Death)
this one was in the tank the longest and it was fine for a long long long time
then today she was last fish remaining
i found her near a rock missing most of her fins and an eye
i moved her to the aquarium with injured angelfish which only has salt in it
she only moves once in a while in a kind of spasm
if she isnt doing a bit better tomorow (if she even survives) then i will put her out of her mysery (squash her with some pliars. Never done this before, figure its least painfull way for the poor thing)
any idea
i will test my water now and tell u what is going on in there

ok
my nitrates are about 40 which is maximum safe level
Nitrites are 0.5 which is also maximum safe level
my water is between 250 and 425 which is very hard
alkalinity is 180
and ph is between 7.2 and 7.6

test is brand new so it is accurate

i tested yesterday before water change and it was the same

i cant tell u amonia right now im gona have to go buy that test because that is only one i dont have other than chlorine
wdf is going on here
all my other fishes seem fine

Based on what you shared there your nitrites are the problem. 0.5 ppm of nitrite is enough to harm/kill most fish. I would guess your guppies were "breathing" funny and were either hovering near the top or wallowing on the bottom of your tank. If I had to guess you were experiencing a mini cycle.

You're using test strips right? If so then them showing any nitrites is not good.

It dosen't matter if the nitrates or nitrites are at their max...there should be NO nitrites or nitrates what so ever. Do a 20-40% water change every three days untill you see a drastic drop in the levels, don't overfeed your fish, and try vaccuming half of the tank's gravel. This helps me when I have high nitrates.

Hope that helps...=D

yeah
i did the water change today
it was 20% (not enough things to hold more atm :banghead: )
im changing water again tomorow and next day and il see if anything has happened
i have no idea why thats happening
ive been trying to prep all my fish for breeding so i have been feeding them bloodworms and brine shrimp, and tubifex worms. none of the brine shrimp or bloodworms ever even hit the bottom and the tubifex float untill there is nothing left of them
i keep my filter on 24/7 (just turn it down during night for noise reasons) and stop the airstones
i rescently added alot of foilage
could that have anything to do with it?

Nitrites and ammonia are the bad things if they are present then your tank is not cycled.

Conversly if there is no nitrate it is not cycled.

tank has been up with fish for very very long time
could sudden addition of new plants do that???
btw one of my guppies decided to somehow show up this morning
living breathing and only missing a tiny chunk out of its tail :laugh:
im debating on whether to put in the 10g i have setup
it was setup yesterday with gravel that was full of bacteria (and i mean full)
it was originally just sitting there on the shelf with some water and filter runing for 2 days
then i decided that id move the guppies to it
i took out gravel and washed it with lukewarm water (it was 21 degrees celsius, i checked!!!)
then i washed the tank with a scrubing pad and water
and gave the filter a rinse
put in new filter pad, and set up the aq.
it gives a reading of less than 20 nitrate
0 nitrite
and no amonia
hardness is moderate
buffering is just hitting 120
and ph was between 6.8 and 7.2

if i wait a couple more hours, think itl be alright if i put my guppy in there??

Ummmm I wouldn't chance it... The tank you just rinsed out will start going through the "new tank cycle" even though you washed it out and the tank has been used before, as soon as you empty out a tank of its old water and fill it with new, then you are going to get the Spikes again.

If your found guppy looks completely healthy I would just leave it. Sometimes if a fish is in the tank most of the time and the tank does the gradual change back into a nitrate/trite spike the fish might grow used to it and be able to handle that change. If you were to take it out and then just throw it into a clean tank with no bacteria that will most likely kill it.

alright
il wait a week and see whats goin on