[Surface agitation & co2 high tech tank]

Good morning all. I have a 55gal deep substrate dirted tank with 3" sand capping with a 20gal sump filter. I have CO2 injection. I have a wave maker above diffuser to disperse co2 and on the other side of tank is another wave maker to circulate co2. This circulation does make a shimmering surface agitation. My question is should there be more agitation or no agitation for the o2/co2 balance. I've read so many websites & forums that for my size tank yes I should have more and some say no agitation. At the moment I can't get any pearling on plants. So confused.

 

[Aquatek Co2 Regulator/Solenoid Issue]

Good point I'll see. Thank you

[Aquatek Co2 Regulator/Solenoid Issue]

I have the AQUATEK Aquarium CO2 Regulator with Integrated COOL TOUCH Solenoid. It's on a timer to turn on & off at specific times. When the timer switches off, the solenoid sticks in the open position. I have to unplug & plug it back in multiple times before the solenoid closes. I unscrewed the solenoid from the brass regulator and found that the rubber O-Ring has been torn slightly and that's the reason the solenoid wouldn't close properly. I reached out to Aquatek about a replacement O-Ring and they replied by I need to order a new solenoid. Of course they would, they want me to pay $40 for a new solenoid rather than pay less than $1 for a new O-Ring. Horrible!!!

Has anyone had this same problem and how was it rectified? I can't seem to find the exact O-ring to replace. I found one at Lowes and it's 5/16" ID x 1/16" CS, but it's too thick. The CS is half the thickness around 1/32" that I need.

The picture below is the O-ring that I'm talking about. It's NOT a picture of the torn one that I have, it's just a reference to location of O-Ring.

[Nutrient deficiency question]

Yes a community tank without angels but I do have a pletco 

[Nutrient deficiency question]

I was hoping someone could help me figure out what type of nutrient deficiency I’m having. I’m daily dosing with Thrive all in one and have CO2. On my Pennywort the new leaves look healthy but this is what older ones look like. They seem to be deteriorating. 
Thanks

[Fluval 3.0 LED - 40 gal Planted - Fertilizer Dosing]

Thank you for the info. I really appreciate it.

[Fluval 3.0 LED - 40 gal Planted - Fertilizer Dosing]

Good afternoon,

New to the group and have questions about new plants. I have a 2 year old established 40 gal long tank with approx 40 mollies, platties & tetras. I have Fluval Stratum partially in tank for my planted 4 Ludwigia Repens & 3 Water Sprite which is just wedged between lava rocks. The rest of the substrate is sand. Also have the Fluval 3.0 LED light & using Bentley's Settings from YouTube. The plants were growing just OK and nothing to brag about. I was adding Seachem Iron, Pottasium & Flourish every 3rd day. And just recently add CO2 injection.

I re-arranged my tank to add more plants. I now have 4 Ludwigia Repens, 3 Water Sprite, 6 Brazilian Pennywoth & 12 Hornworts. I also have now your Co-op all-in-one fertilizer which I plan to use. My question is what do you think the light settings for these plants should be & how much dosing for the all-in-one should be used weekly. Sorry but reading some of your previous discussions on other threads is just confusing to me.

Any feed back would be helpful

Thanks