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pH buffers are just a "blend" of alkalinity supplements. Both Boron and carbonates have a pH around 10, and bicarbonate has a pH at 7.8. So, "blending" them together will provide a pH of whatever that manufacturer is selling, i.e. perfect pH @ 8.3, Aqua Vitro @ 8.4, etc. The problem is that they...

I had two of this type of light as my first attempt with LED's. I replaced them after about a year of use, since I needed a third fixture and couldn't find one that had the same power cord/power switch configuration(mounting issue). After about 6 month's, the person I sold them to had to return...

Are you saying the frame is broken?

I had fixtures with both 60's and 90's, the 60's were just too tight a focus.

The only thing I'm replenishing in my system is my Ca and Alk.

I've been running BP's (BRS) for a few years, along with GFO (HC) and GAC (ROX 0.8), without issue.

Tunze 3155 here.

http://www.aquariumspecialtiesresearch.com/

These are all gone, mod's please close. Thank you.

Any time of year the house is closed up due to weather your going to have elevated levels of CO2 in the household atmosphere causing your pH to drop a bit. Your numbers are fine; I wouldn't chase them, as long as your Ca and Alk are within acceptable ranges. I would not use a pH buffer, since...

Excellent, congrats Paul.

Congratulation Jose.

I'm selling these along with a light I had planned for another project. These would have been too big anyway, eventually I'll get a couple 25's. I run two each of the 40's and 25's on my system now, going back to last March, and have no complaints.

It's yours Dan, although I have two, so I'll leave the thread open.

Brand New In Box Jebao WP-40 with the latest controller - $95.00

http://www.gamurdock.com/gam/out/GROUPS/Fittings-Union-Elbow.htm

Looks great, Dan.

You might want to double check the process for the Mg test, it can be a little confusing with having to mix each drop of reagent A for 15 seconds between each of the 5 drops, and keep track to make sure you add all 5 drops. Here is a demo. Although it's a little high, and you don't need to keep...

I wouldn't chase the pH, it's going to be a little low any time of year the house is closed up due to weather, causing higher levels of CO2 in the house hold atmosphere. Keep your Ca and alk in acceptable ranges, and you'll be fine. You could however, run an air line from your skimmer to an...

Any updates? How is the skimmer working for you? It was new, and may have needed a little break in for it to get up to speed.