A pink or purple ring around the pool could be caused by minerals. You should try shocking your pool water.
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Your purple heart plant may be turning green due to insufficient sunlight. Purple heart plants need plenty of sunlight to maintain their vibrant purple color. Try moving your plant to a location with more sunlight to help it regain its purple hue.
really purple but looks blue
The leaves on your plant are turning purple due to a process called anthocyanin accumulation, which is triggered by factors like stress, nutrient deficiencies, or environmental conditions.
Purple basil turning green is likely due to a combination of factors such as insufficient sunlight, nutrient deficiencies, or stress. It is important to ensure the plant is receiving adequate light, nutrients, and proper care to maintain its purple color.
phosphorous deficiency or cold stress.
you need to call 911. DO it NOW
Not exactly sure if this is the problem, but from my experience in the pool business I've seen purple build up on fiber glass pool's surface, and it seemed to be a combination of two or more of these conditions: low calcium, low ph, and well water
Your cold, have weird nipples or your turning into a warewolf ;)
Your plant may be turning purple due to a lack of nutrients, specifically phosphorus. This can cause a condition called phosphorus deficiency, which can manifest as purple discoloration on the leaves. It is important to ensure your plant is receiving adequate nutrients through proper fertilization to address this issue.
The cool weather is the factor that caused the leaves turned into purple color of some st.paulia species.