I have a major problem in my 250L (approx) community tank. Haven't had white spot for over 25 years but I have now!
All was fine last Sunday ('cos Joefish! spent ages studying them during our fish meeting) then he visited again on Wednesday and noted all the Rhom barbs were covered in whitespot. As they had been behaving normally (from where I could see them across the room) I had not noticed.
I added whitespot treatment according to directions. Can't raise the temp as the tank sits on a heat pad with a thermostat so encrusted we can't turn the knob higher, so temp is 24C. Both my spare heaterstats are out on loan :roll:
Yesterday I netted out 4 dead fish - 1 rhom barb, 1 golden barb, 1 giant danio, 1 odessa barb.
Did a 90L water change, cleaned out filter and added more treatment.
No further deaths today (that I can find bodies but possibly some smaller dead have been eaten. The Hengeli numbers are down but hard to count fish in a heavily planted tank) but fish not happy, although the majority are swimming as normal. Two hoplos are out in the open - most unusual as I only see them when they feed, and 1 defiintely has spots.
pH - 7.0
Ammonia - 0
NitrAte - barely colour on lowest reading level of 5
The rest of my test kits are so old they are innacurate.
I have no idea what has caused the outbreak but will sit tight and see what survives I guess, apart from adding the teatment. I know many suggest adding salt but I am not keen.
Apart from the whitespot, fish look and act normal with only minor clamping on a couple of golden barbs.
The gouramis are not well but they are geriatrics now so didn't look 100% to start with.
I would treat the cause if I knew what it was! :-?