I am planning to use biochar as a perlite replacment. Anyone have experience using it? What size chunks should I use 1/8"-1/2" just like the suggested pine bark size? I do use the 5-1-1 will I need less lime if I use char as a replacment for perlite? I plan to try a mix of 50% peat 20% bark and 30% char. If anyone could anwer any of these question please do. Thanks in advance.