raisin water sourdough starterwe

i took 1 kg fresh grapes and mixed some cloves inside and 500ml water and fermented the mix for 5 days with 500g flour at room temp stir every days for 5 days. and removed the grapes. we kept 500g of the started then fed the starter with 150g water and 150g flour and 4 hours later we added 300 g flour and 320 water. another 4 hours later added 600g flour and now we repeat every day now 15 years