my orp reading kept getting stuck at 336 , how to increase up to 400 ?

[chercm]

pls advice

[Texastravis]

Inject ozone into your tank. If your taking ORP reading I am betting that you are already doing so. If you have been injecting ORP then chances are you cant raise it anymore unless you go overkill on an ozone injector.

Typically people have different ORP levels across the globe ranging from 280-420. Typically upon injecting ORP into there tank it will raise this ORP lvl 15-50 thus clarifying your water a bit.

Hope this helps.

[chercm]

i am running off a air pump with Sanders c50 ozoniser and the dial is at 3/4 mark.... i am running a 400 litres tank .

do i need to tune it all the way ?

[chercm]

i thought the minimum orp reading should be 400

[tkeracer619]

You do not need 400.

Everything you ever wanted to know about ozone

http://reefkeeping.com/issues/2006-03/rhf/index.php

[Nanook]

It's just a number....don't worry about it....seriously:)

LOOK at your tank inhabitants, do they look OK, if so, you are all good.

[chercm]

so how much would i need to set it ?

360 also can ?