Re: High KH on new tank

Thanks for your replies.

I produce my own RO water which I've tested and is phosphate & nitrate free.
I assume the phosphate and nitrate was introduced with the live rock as all
other inputs are supposed to be clean.

Ammonia & Nitrite are rising and the water has developed a green hue .......
so I guess it's started cycling. I haven't installed my calcium reactor yet
..... will wait until cycling is complete and dKH has dropped to 10 or so.
What was your KH value after 4 weeks?

John


"Chris Taylor" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
>
> My tank had similar issues when first set up and went up to 20 dKH. It did
> drop on its own after about 4 weeks. Its worth noting that Salifert
> Phosphate readings become erroneous if dKH>20 and you're close enough
here.
>
> You needn't worry too much about the hardness as the tank is still
cycling.
> Do you have a calcium test kit? If you're monitoring hardness, you may as
> well monitor calcium also.
>
> Are you using RO water? your nitrate readings may wish to see themselves
> lower once the tank has cycled. If you're not using RO or DI water you
might
> want to find some way to reduce nitrates (and phosphates) from your source
> water.
>
>
>
> "J&T" <[EMAIL PROTECTED]> wrote in message
> news:[EMAIL PROTECTED]
> > Have a new reef tank which was filled 5 days ago - water tests seem ok
> > except for high KH which I'm not sure what to do about. It's possible
too
> > much buffer was added by the supplier who installed my tank.
> >
> > 100 gallon tank with Ratz sump/trickle filter/skimmer/calc reactor. Tank
> > maturing with 100lbs fresh live rock and rotifers, flow rate 2000
> ltrs/hours
> > plus additional flow off 4x1800ltr/hr power heads. Metal Halide & marine
> > blue tubes for lighting.
> >
> > Test readings at 5.30pm today were:
> > Temp 26deg C
> > SG 1.025
> > PH 8.3-8.6
> > Total Ammonia 5.0mg/l
> > Nitrite 0.3mg/l
> > Nitrate 12.5mg/l
> > Oxygen 5.0mg/l
> > Phosphate 0.25mg/l
> > Carbonate Hardness  19dKH (340ppm)
> >
> > Can anybody suggest what action do I need to take? ..... if any
> >
> >
>
>