Alright. So, not too much to report but I do want to mention 2 additions the 75 gallon tank received.
I removed the GLA reactor from the 40 gal algae tank (failed AGA tank) and put it on the main display. I have been waiting to do a review and here's my first impressions. 2 stars, maybe 4 stars! If you have a low GPH pump/filter, it's 2 stars. It didn't improve CO2 efficiency in any way and in fact, due to the plastic chosen for its construction, was louder than my DIY Cerges reactor.
Now, with a pump rated at 394 GPH, things were different. Noise was slightly less and the CO2 "gap" in the chamber was noticeable lower. However, this was unable to reduce my injection rate. That said, this drove my impression to 3 stars. It was less noisy (less CO2 gas gap) and actually created a vortex inside the chamber. It has a lower profile than my Cerges reactor and I consider this a plus. So with all honesty, I'm happy with the reactor up to this point.
But, here's something to think about. So far, all injection methods have resulted in near identical BPS or CO2 flow rate. Why? Why does changing my CO2 injection methods not improve efficiency? I do not understand this phenomenon. This brings me to my next addition. And I'm certainly thrilled and worried about this addition.
So last week I could tell something was wrong, and sure enough; my pump needed a cleaning and so CO2 levels dropped immensely. I literally got BBA over night! I cleaned the pump, installed the GLA reactor and flow was restored. The GLA performed as mentioned above but today I received and installed the American Marine pH controller. But there's a problem, something I don't quite understand.
I was only able to play with it for about 45 minutes, but my first impression is that it's freaking awesome! Here's the problem though. I cranked up the CO2 injection rate. The Chamber created a CO2 gap very quickly and pH dropped very quickly too. The controller turned off the solenoid and surprisingly, the CO2 gap dissipated within minutes. I immediately think I have a leak. I grab soap and water, drowned the CO2 connections, no bubbles. Hmm, what is going on? Can this reactor be so efficient that it removes the CO2 gap quicker than all the other methods I've tried? Apparently so, I see no leaks so far. And if CO2 is leaking, wouldn't water leak from the same source? This reactor dropped pH from 5.2 to 5.01 in just a few minutes. Wow! This bumps it to 4 stars, and only because this PinPoint is so awesome! Is this a perfect combo? We will see, I will continue looking for leaks.
Now I have to decide, do I run the controller over night, or turn it off over night and only have it come on while the light is on? It seems to save my settings after being unplugged, so maybe I should keep it off. I will report back on how this portion goes.
A cool feature is, you can hook and air pump to it, and if pH drops too low, it powers them pump to raise pH. Cool stuff!
I will report back after some time.