Overdosing any bio stimulant is likely or guaranteed to negatively affect plant health. Years ago we experimented with Chemicals to cause Phals to produce up to 8 spikes at one time. Easy to do and the show of flowers was fantastic. But we learned that it took years for the plants to recover and...
Take your plant out in sunlight to evaluate the color and lightness. LED light always shows misleading color.
If you feel like the plants are not as healthy with foliage closer to the lights consider reducing the hours the light is on to reduce the DLI (total light energy received by the leaves).
The CITES license is required forIor commercial shipments. If you intend to sell or barter the plants you need the CITES license to protect yourself in the future. And if you are importing CITES Apx1 species it think you need it regardless.
Your temperature range is fine for kovachii and it's hybrids. For kovachii 8°c is more like a minimum safe temperature not a requirement for good growth.