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post #1 of 3 Old 07-27-2007, 11:20 PM Thread Starter
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ph and KH question

I got a bit of a Question that I don't understand with my tank at the moment but 1st my weekly water test from this morning.

Temp-26.8
SG-1.0225
ph-7.9
Amm-o
nitrite-0
nitrate10
calcium-440ppm
KH-196.9ppm
*last water change was 8days ago, of 50ltrs salt...I change 50ltrs every 2weeks.

how can my ph be down and my KH up?... doesn't carbonate hardness activator also push up ph or am I way off?
Rob.

Saltwater 4foot (67gal) and Reef Rock/Plugs (300)Sump (12gal) with a 3000ltr/hr return pump(32watts)
1x 6025, 3 x TUNZE 6045 for flow.
Aquasonic Skimmer with 3000ltr pump
16watt UV. *5 Lights: 2 Actinics and 2 Daylights and 1 Gro-Lux.
*Fish @ the moment: Powder Blue Tang, South Seas Devil, Mandarinfish, Lemon Peel, Bi-colour angel, Coral beauty, Scopas Tang(4in), Coral Banded Shrimp(been in tank for 4/5yrs) and a Dusky Anemonefish(3in).. and 2 Red Base Sand Anemones..A pair peppermint shrimps.
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post #2 of 3 Old 08-03-2007, 01:31 AM
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maybe it needs more time

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post #3 of 3 Old 08-03-2007, 09:58 PM Thread Starter
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ok its a week latter and here is todays test but this time I did it @ 9:45am, not 8am. no water changes since the last test other then top-up.
Temp-26
SG-1.0225
ph-8.0
Amm-o
nitrite-0
nitrate10>20
calcium-400ppm
KH-196.9ppm
...so I'll put it down to "the time of day" and I'll do a test after lunch and thinking it will be about 8.2 or so.

Saltwater 4foot (67gal) and Reef Rock/Plugs (300)Sump (12gal) with a 3000ltr/hr return pump(32watts)
1x 6025, 3 x TUNZE 6045 for flow.
Aquasonic Skimmer with 3000ltr pump
16watt UV. *5 Lights: 2 Actinics and 2 Daylights and 1 Gro-Lux.
*Fish @ the moment: Powder Blue Tang, South Seas Devil, Mandarinfish, Lemon Peel, Bi-colour angel, Coral beauty, Scopas Tang(4in), Coral Banded Shrimp(been in tank for 4/5yrs) and a Dusky Anemonefish(3in).. and 2 Red Base Sand Anemones..A pair peppermint shrimps.
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