Clover as a mulch and will also add nitrogen to soil

Will it not be a good idea to use Clover to keep your grow medium cool and also add some nitrogen to it. I have read somewhere that growing Clover as a mulch adds nitrogen to the grow medium and Clover thrives with a ph between 6 and 7 which could also be used as an alarm to warn you to check your ph level not that I have ever checked me ph level. I also use my Clover to tell me when to water my plants since the Clover roots only go about 3" deep its perfect cos when the Clover looks a bit limp it’s time to water. Any input is welcome.