At last a proper answer, let's sum it up

It's not about too much or too little water; it's not moving because there is no ATP to do so. Water mostly travels via bulk flow in plants, with many nutrients transported for free (no ATP-driven energy cost). As soon as she goes anaerobic, Bulk flow stops; all nutrients now have an ATP cost attached, and the entire process as a whole grinds to a snail's pace. An upward-facing canoe is heat-related, or more so, water output is faster than water input; the plant is unable to cool. The ambient heat causes water to evaporate from inside the leaf faster than the roots can transport it up. This forces the plant to decide, under duress, to sacrifice the "least important" parts first (leaf edges). The plant constantly adds more sugars to the medium to feed microorganisms; this is converted to carbon dioxide, and this will accumulate over time. Understand also that anytime more carbon is added, it's slowly and slightly increasing moisture retention. As flowering progresses, especially as a strong canopy starts to develop, a lot of the ambient evaporation from lights will cease; the pot itself will become more dependent on transpiration as the flower progresses, so it's important to remember these little differences matter over time, less and less evaporation occurs, with more and more moiisture retention it can become the catalyst that changes a medium from aerobic to anerobic, the margins are small but the consequences are many and none of them good, slow creeping problems that will destroy energetic conversion, skew ph, lock out nutrients all sorts of problems. Oxygen travels approx 10,000 times slower in soil than in the air, depending on porosity. Oxygen travels 320,000 times slower in oversaturated soil. Even in the optimal porosity soil, even if it's in abundance, it's so slow it's almost instantly "locked out." Then it just becomes a waiting game for whatever symptom creeps up first from the many on the way, which will all stem from the oxygen deprivation at its root; call it iron, call it rust, call it pH swing, call it calmag, it all started when oxy got low. Mentioned you watered +50%, could have been enough to cause initiial hypoxia; as soon as oxygen goes in a medium, iron becomes especially problematic in mushy soil, converting into unavailable(for uptake) forms of iron; plant loses all bulk flow, all active transport of nutrients stops, no energy, no water. This occurs because water uptake is an active process that depends on energy, and anaerobic respiration is far less efficient than aerobic respiration; ATP drops from like 38 ATP per glucose molecule to 2; it's that bad. Often causing the plant to show symptoms of drought (wilting/canoe) despite being surrounded by excess water. The water is there; it's just not moving due to lack of energy to do so..........In an optimal wet-dry cycle, you need to allocate watering in the morning, so the soil will not be oversaturated at night; cellular root respiration will barely occur if there is "oxygen lockout." Rust is just iron fuckery from said oversaturation. Nice to see you, John. Hope you are growing well. Good luck with the plants.