typically they recommend aerating to stablize PH, etc. But at 7g per day I think you should be ok.
A little update on our tank (sorry to hijack the thread to talk about our tank again...
) :
More Vortec woes... More stalls (but not the same scenario as before) and now power supply failures as well.
I am beginning to question the reliability of these as now it seems to be just flat out poor material causing failures. I knwo that IC/ETM address their QC issues with the manufacturing processes, and I applaud their efforts and was extremely encouraged to hear that they had done so. But... well, I will just relay what happened today :
As we reported a while back we bought 2 battery backups since IC/ETM stated that was the only way to use the Vortecs "safely" on a wavemaker. So I put 2 of the 4 pumps on a wavemaker, each with it's own BB. (We had originally tried using 1 BB per 2 pumps, since the BBs have connectors to hook them to 2 different pumps.. but that did not work when used with a wavemaker and evenaully completely drained the battery. IC/ETM came back that the BBs for use with a wavemaker must be 1 for 1 with the pumps). We had received new parts for our ailing Vortecs some time back and everything was running fine. We let them "break in" for a couple of weeks before putting them on the wavemaker, since I thought I had read somewhere that they were more inclined to stall when they were new (beofre they were broken in). We did run them @ 100% during that break in period, again based on a recommendation that we read somewhere. We also put the wavemaker cycle @ 15 minutes (again as per recommendation, and also the longest duration that our wavemaker could do). Not more than a couple of hours later I checked and noticed that one of the pumps was rattling horribly, I checked and it was on battery power (during it's "down" cycle on the wavemaker I surmised). I tried readjusting the motor until the rattling quieted to a dull roar and then left it alone. Later I checked it again and noticed that it was stalled, I checked the driver and it was a solid red light. It was also on BB power when I found it. I unplugged the battery cable and then plugged it back in and the pump restarted and I went on about my day. An hour or so later I checked it again and it was again stalled.. a check of the driver confirmed this. I noticed that BOTH pumps were on battery power, so I started looking more closely at the stalled one and found that the power brick was now literally a brick.. dead as far as I could tell. I unplugged it from both the wavemaker and driver and plugged it into an unswitched wall outlet... and still had no lit green LED on the power supply.. I sent an Email off to IC/ETM and also posted over in the IC forum (right under someone gushing about how great these pumps were... their thread got tons of views.. last I checked mine only had 2.. *sigh*).
So now it appears that the power supplies (At least ours) has issues and also that the pumps (even the new updated ones) can and will stall when on battery backup. To me this is almost worse than the stalling issue before, although since only a portion of the Vortec owners bought into the BBs, they rely on them for the flow when they are needed the most, during a power outage, and that is where ours appears to fail and stall.
And of course our tank is jsut now going through the cyano "phase" growing pains.. so the absolute worst time to have faulty flow devices and low flow issues
Ok, enough of my woes, I will post what comes of this as soon as I can get IC/ETMs attention again
Now back to our regularly scheduled ATO/WC conversation