Hello
This is Pranay from india.
i have 2 small tiger oscar. need to know all about water chemistry.
how to know water hardness, pH level and poor water condition.

waiting for your reply

welcome to the site.
first thing first.... how long have you set up your tank?
it must be cycled first before you have fishes in it.
uncycled tank can compromised the health of your oscar.

for more info... go to home page and surf for each topic
for you to be properly equip with happy fish keeping info.

Thnx paul for your quick reply.
my set up was just 1 month old... which has power filter and oxygen filter.
first i had some small different kind of fish...
but 1 week ago i brought 2 tiger oscar...
i am all new for all these...

if your tank had been running for 1 month with small fishes,
probably, it is cycled already.... however, proper testing is
needed in order not to compromised your oscar.

oscar with proper care, grows fast, thus, expect mess and a
load of waste. you need a good filtration to maintain good
water parameters. but expect that they can take small fishes
meal...

tank size?
kind and capacity of filtration?
other fishes?

tank size is 30 gallon.. 1 power filter and 1 oxygen filter...
no tank mates....

i don't want to bring you bad news but i have to.
your tank is too small for two oscar. one o requires
at least 55 gal tank with good filtration. most moderator
will tell you to upgrade immediately or rehome your o.

i read that oscar required 55 gal tank and more....
but i have already 30 gal..... and my oscar are 3 inches now...
n need to know about water chemistry... i dont know anything about pH and all.
and how to know that your pH level is increased or decreased?

pH is not that critical unless you are planning to put crashed
corals as your substrate. what you should watch are the ammonia,
nitrite, and nitrate. those are the most lethal elements to oscar
if remain un-check.