Can you tell me a good but not too costly pH Meter?So basically I am not home,but I ll be in a matter of hours,then I Will raise humidity to cure the drooping Right?Your environment is too dry. try to keep it between 40% and 60% RH. Higher is better in veg. This is why the plant is drooping.
I would not use that mineral water is has too much of everything including sodium and calcium.
What you need to learn about watering will come with practice. Here are the basic rules: Never let the soil dry out. Soil and or coco can become hydrophobic if allowed to dry. This means it repels water. This in turn will create dry pockets in the soil and the roots and microbes will die there. If your soil - coco have accidentally dried out use a surfactant to help re-wet it. I like yucca powder. Don't let soil remain soggy by watering too much too often. Root rot, damping off, molds, fungus gnats and other problems start in soggy soil. When you do water water the entire pot. How to learn when to water starts before you plant the seed. Fill your container with fresh soil/coco and weigh it (heft it) this is the lightest weight and consider it a dry pot. Now slowly water until the soil/coco will no longer absorb the water and run-off begins; weigh the pot (heft it) this is the maximum water, the wettest the pot can get. The difference between wettest and driest is the maximum water weight, for ease of explanation lets just say the water weighs 20 pounds. When the pot loses 10 pounds (half of the water weight) it is time to water again. There is an art to watering.
I highly recommend against cheap meters like that You have invested a lot of money and time to get to this point. A cheap meter cost me a 6 plant grow just 3 weeks from finish. I lost around $3,000 worth of bud (street wholesale value) due to a faulty meter that I believed. Not to mention all of the electricity and nutrients!
Also which water should I use?Distilled Is ok?