Myka
Reefing since '93
So I've been playing around with pH a bit. I have a CO2 scrubber on my skimmer during the winter months. I started using sodium carbonate instead of bicarbonate (I baked the AF KH Buffer before mixing up DIY AF balling). I also bought a kalk stirrer to dose at night to help with the diurnal fluctuation, but realized it won't do what I want it to, so I'll have to figure out something else. Maybe dose kalk on my 4th doser pump. Anyway...my tank was finally staying at 8.0 overnight instead of dropping to 7.8 and I actually saw 8.2 during the day, so I was pretty happy.
I decided I should probably calibrate my pH meter because it's been awhile. I set up the 7.0 and 10.0 pH fluids. I always check the meter before calibrating. I put it in the 7.0 and it reads 7.4 - uh oh. I put it in the 10.0 and it reads 10.5. So I finish recalibrating. I go test my tank... 7.6!!! WHAT? :facepalm: So this past week I've been testing first thing in the morning before the lights come on and last thing in the evening before the peak lighting turns off. I'm getting 7.4 - 7.6. WHAT??? :uhoh2:
So I'm thinking, well I guess I'll go back to storing the pH meter and forget about it. Good plan, right? :lolspin: Then it dawns on me this morning...I haven't tested parameters in the tank in awhile, and I've been noticing less polyp extension in the last couple weeks. I check the book - last test, Jan 25th. Hrm. Here are today's parameters:
SG 35 ppt
Ca 430 (Salifert)
Alk 5.85 dKH (Salifert)
Alk 5.7 dKH (Hanna)
Mg 1320 ppm (Red Sea Pro)
K 400 ppm (Salifert...this kit may be reading 50 ppm high)
So, in case you didn't see it, I highlighted the problem. :lolspin:
So I'll be adding 1/2 tsp of sodium bicarb every morning for the next 2 weeks in order to get alk back up to where it needs to be. :facepalm: The drop was about 0.5 dKH per week, so that's not horrible. My addition of 1/2 tsp bicarb will increase alk by about 0.15 dKH per day. I'm crossing my fingers I won't see any damage. Thank goodness it was down 2 dKH and not up 2 dKH. :hammer:
Thanks for the info! Regardless, the single 400w in that particular reflector doesn't give enough spread for my tank. Not even close.
I decided I should probably calibrate my pH meter because it's been awhile. I set up the 7.0 and 10.0 pH fluids. I always check the meter before calibrating. I put it in the 7.0 and it reads 7.4 - uh oh. I put it in the 10.0 and it reads 10.5. So I finish recalibrating. I go test my tank... 7.6!!! WHAT? :facepalm: So this past week I've been testing first thing in the morning before the lights come on and last thing in the evening before the peak lighting turns off. I'm getting 7.4 - 7.6. WHAT??? :uhoh2:
So I'm thinking, well I guess I'll go back to storing the pH meter and forget about it. Good plan, right? :lolspin: Then it dawns on me this morning...I haven't tested parameters in the tank in awhile, and I've been noticing less polyp extension in the last couple weeks. I check the book - last test, Jan 25th. Hrm. Here are today's parameters:
SG 35 ppt
Ca 430 (Salifert)
Alk 5.85 dKH (Salifert)
Alk 5.7 dKH (Hanna)
Mg 1320 ppm (Red Sea Pro)
K 400 ppm (Salifert...this kit may be reading 50 ppm high)
So, in case you didn't see it, I highlighted the problem. :lolspin:
So I'll be adding 1/2 tsp of sodium bicarb every morning for the next 2 weeks in order to get alk back up to where it needs to be. :facepalm: The drop was about 0.5 dKH per week, so that's not horrible. My addition of 1/2 tsp bicarb will increase alk by about 0.15 dKH per day. I'm crossing my fingers I won't see any damage. Thank goodness it was down 2 dKH and not up 2 dKH. :hammer:
I tested a brand new 400 Radium combo. Using a Galaxy ballast and a Lumenmax Elite reflector I got 2000 at 12" in the hot spot.
Thanks for the info! Regardless, the single 400w in that particular reflector doesn't give enough spread for my tank. Not even close.