finally got scrubber up and running

In the toolbar at the top of the quick-reply editor window at the bottom of the thread is an icon that looks like a piece of film. Click it and you get a pop-up. Upload your video to one of the sites listed (youtube, vimeo, etc) and then paste the link. I don't allow video uploads as these take up tons of server space, and servers in general choke on anything over 2MB on an upload (which is why nearly every forum doesn't allow video uploading)

 

It's a little hard to tell in that video, can you take one that is further back a bit and more straight on, so I can also see the water flowing around the false bottom?

What pump are you using and how much vertical head is there between the sump water level and the slot pipe level?

 

Your vids are all "private" I can't watch them

 

You don't need to upload them again, just go into your video manager and change them from private to public

...too late...

 

If the pump has a built in control valve, then I wouldn't use the other one. Or vise versa...just use one. The flow looks a little low but that's ok right now I think. You don't need/want a ton of flow when the screen is maturing.

I also notice that the "arcing" of the flow has already stopped. That usually doesn't take long.

 

It will progress slowly over the next couple weeks

 

That's where you want to start, and leave it there until the screen gets mature. Then start extending the daily photoperiod by maybe an hour every 14 days or so and monitor scrubber growth and tank conditions until you reach a good set point. If you get to 18-20 hours/day and that's still not enough, then you can start moving jumpers to increase the LED intensity and back down the hours and then start the "increase the photoperiod" cycle again (i.e. low intensity + long photoperiod = high intensity + shorter photoperiod).

FWIW I run an L4 on a 200g at 12 hours/day on the default (low) intensity and it does a very good job of keeping N and P near zero with big tangs in the tank. Tank also runs a skimmer and sock, plus some carbon (but not changed often)

 

N will come down fast, P at 0.6 is pretty high, that might take longer to come down. You will likely be able to leave the photoperiod at 9 hrs/day for a while. You might look into a Potassium (K) test kit and some dosing product like Brightwell Potassion-K if that is low. I've learned a few things about K dosing and it's relation to a scrubber's capability to uptake N and P, basically you can't overdose K

 

Yeah I wondered about that

I would not change anything until you get a mature screen and the system adjusts to the scrubber. There is no reason to feed more just to support the scrubber or encourage growth. Growth happens according to the needs of the tank