Graph showing pH of effluent and display for the last 5 days:
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I didn't make any adjustments to the CO2 or CP pump in that time :bdaysmile:
We'll let you join one of these daystried to join the club but just lost the bid on ebay.... =(
CV expressing new impeller. Regardless the amount of aroginite mud in the impeller chamber is alarming. Thoughts? Bad impeller lead to mud collection? Traditionally I'd say gas is pulverizing substrate too fast but again Rx pH is 6.45-6.55
tried to join the club but just lost the bid on ebay.... =(
What's a normal range for effluent pH during a day? How much does it really matter if it fluctuates .1 or .2 pH units? How much is too much? These are my deep questions for the day![]()
For what its worth I have been running a kamoer KSP-F01 for three weeks and it is great control is fantastic, quiet and the pump was reasonable $260.
http://youtu.be/KIW9ikYA6_4
What's a normal range for effluent pH during a day? How much does it really matter if it fluctuates .1 or .2 pH units? How much is too much? These are my deep questions for the day![]()
I just won an auction for a Masterflex digital drive with head.
I think we pay too much attention to the effluent ph and not enough to the effluent ALK
This is why I suggested tuning to the regulator and not the probe. If you feed a metered amount of water and a metered amount of gas, in theory and from what I have observed it will just dissolve more media (as media volume is reduced) keeping the kh output the same over the life of the reactor.
You would increase gas as demand increases. I usually don't mess with effuent rate unless reactor ph gets too low. I like to operate within a reasonable ph so once it gets down to 6.35 under normal operation i bump the effluent rate to get back to 6.5ish.Does this mean that as tank demand increase you increase flow or increase gas? Tuning the regulator and not the probe sounds like you would increase the gas to get a higher exiting effluent ALK?
Sorry to belabor this, but just trying to understand.
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thanks Mark. checked ebay and asked seller to clarify what he had listed...
US Plastics carries PHarMed BPT Tubing in smaller (more practical) quantity of 5' minimum
any difference between LS18 and this PharMed BPT which is made by Tygon?
USP carries a 5/16" ID (7.9375 mm ID) x 7/16"OD x 1/16" Wall, takes a 5/16" Barb.
CP carries LS18 which is ID 7.9 mm ID (.31"), and takes a 3/8" Barb
my concern is the 7550-90 which is 1-60 RPM needs the big tubing to get me up to 228 mL/Min which is conceivable I may need the capacity for. I've got enough LS16 tubing to wallpaper my house, but need LS18 or equivalent...
I just realized you were asking about precision tubing. You can use any of the pharmed tygon from usplastics that has a 1/16" wall thickness.
what is the part number on the pump head again... believe it or not it is somewhat hard to keep you guys and your part numbers organized... :lol: