They look great Olias! MC is right, dead matter in the pump will cause swings in pH. Is that front middle spot always open? If so, you should cover it with something to keep light out of your res. Light will cause lots of problems, warm water, algae, slow root growth.
SMOKE REPORT: After leaving my buds in the jars for about a day, they got moist again so I removed them to dry some more. Last night they felt dry and have gone in the jars for good with a final dry weight of 27.8 grams. I know it's pretty low for 2 plants, but I'm happy for my first time. I smoked a bowl last night with my roommate, and it was great! I was high for over 3 hours, but I was not happy with the taste. The smoke is kinda harsh, but I think it will improve during cure.