Shamal dust and the 48-hour algae window
The shamal is the north-westerly wind that pushes down the Gulf, most intensely in early summer and in shorter winter bursts, and it is the single most predictable cause of green pools in the Emirates. The dust it carries is not inert: it brings phosphates and organic matter that feed algae, and a heavy storm can seed a warm, marginally chlorinated pool so effectively that visible bloom appears within two or three days.
Owners who travel in summer are the classic victims here, because a storm hits, nobody brushes the pool, and the villa is reoccupied three weeks later to opaque green water. If you will be away during peak shamal months, keep the maintenance contract running rather than pausing it; rebooking the same vendor for an extra post-storm visit takes a moment in the tamam app, and the technician who already knows your pump room will move faster than a stranger.