hi guys,my fish has been going good,but today i noticed a large white patch on his head today when i got home from work,wasnt there last nite tho..he's about 7 inchs long now,the patch takes up most of he's head,,doing at least 25% water change a week,,he's prety slow moving last few days (except when he see's the food ,haha) any ideas????cheers chris

A pic might be helpful if you can manage.

Was thinking at first you meant white spot as in ich but sure doesn't sound like that, except it would be like salt grains. How does it look, like a skin abrasion or greyish mouldy or fuzzy stuff?
In the first case it could be he just bumped into something and it should heal normally, provided the water is kept clean. If it looks fuzzy like cotton it might be fungus which is almost always a secondary infection though from my experience. Else it could have several reasons, even HITH can appear like that (would rather think developing with time though for HITH, but not sure).
Knowing your water parameters to be safe might be good too, as well as some data about your tank, feeding and possible tank mates. Bet you posted that somewhere already but I can't recall now.

hi,could try get a photo for you,how do i load them onto page,,the tank is a 3 foot tank,150 litres(aus).no tank mates,he is feed palets and crickets,twice a day..dont know anything else other then ph level,which i check every couple of days.thats why i do weekly water changes,to keep other levels down(does that work??),hope that helps,cheers

hi,could try get a photo for you,how do i load them onto page,,the tank is a 3 foot tank,150 litres(aus).no tank mates,he is feed palets and crickets,twice a day..dont know anything else other then ph level,which i check every couple of days.thats why i do weekly water changes,to keep other levels down(does that work??),hope that helps,cheers

woops...not sure how i got 2 post on here

Lol happens

For the photo, you could try to resize it to no more than 50 kb and max 400 pixel (I think) in width and height and then attach it to your post by uploading it to OFL (using the field/button for that). JPG format should be best for that purpose, 72 DPI resolution is sufficient. Any simple freeware graphics program should be able to do that if you don't have any application for that. (I use Irfanview.) Lowering the picture quality will give more compression and help lots with reducing file size. This only if you don't know how to modify pics. Else you can as well upload it to photobucket.com and give us the url for it.

150 litres is quite on the small side (think litres are the same everywhere, correct me if I'm wrong), so you can expect more and more water pollution as your Oscar keeps growing; I'd rather do water changes twice weekly, especially if feeding twice a day. And yes, it's the way to keep the other levels down, along with good filtration.

Hope you can work that photo thing out and that it's nothing serious.

150 Liters = 32.9 UK Gallons

size of tank is to small you are possibly gonna have constant water quality issues as oscar mess alot.