EI works well... PPS Pro is also a good way to go... either one will get you headed in the right direction without requiring extra test kits or much extra work.
You can google either one to read up on them... they are both widely used methods for fertilizing a planted tank without the need to do much testing.
You can google either one to read up on them... they are both widely used methods for fertilizing a planted tank without the need to do much testing.
