@@hillman, Laughing Buddha is half Thai and Jamican. Both Thailand and Jamica have tropical climate ,temp can reach up 37C in Thailand. That's why I dont want temp to go below 27C , Thank you anyway!
<span class="link_user">@TropicalCAT</span>, that would be the mecanics of it, however without a proper read you can´t be sure of the exact temperature. Try a solution temperature of 20°C for a week. It is the ideal temp for nutrient absorbtion. Day air temp 25°C.
<span class="link_user">@TropicalCAT</span>, sorry to reply so late (internet issues). If the reading of your substrate temperature is real, then you deffinetly have a nutrition defficiency which will only get worse unless you lower it, say 22°C. This has been my experience in the matter , hope it will help.