So, my other plants have surpassed this OG, unfort...

From my experience this looks like it's an overwatering issue. I would recommend you stop watering so much immediately. I'd recommend using the lift pot method and going from there. Water solely around the roots/where the growth is. In turn you should also be less eager to water again. Once the medium is fully dry and you can pick your pot up and notice the difference between dry and watered, then flush her one good time and on the final flush before you put her back in the tent, add your recommended nutes if you are giving her any, back in the pot. You always want to add nutes back in because a good flush will take the good things out. Remember less is more!

The plant looks overwatered to me. Also I am not sure what is up with your pH test color. It doesn't look as bright as mine does when I test. How many drops are you using? It takes 4 or 5 drops to get a bright enough color to be sure. I would also let the water settle in your test tube for a few minutes before adding the drops so you can get a good reading without the water being so cloudy. You want to get yellow and a little light green tint is ok. Any orange and it is too low. Also it really helps in diagnosing an issue if you take photos without the grow light on. Makes it impossible to see the leaf colors.