I am Colin Maniscalco from the island of Malta.
I proudly use for years now Rowa Phos and Rowa Carbon in to my reef aquarium. They are excellent. I believe that both products are the best that an aquarist can buy. But sometimes people don’t give you the right amount how many the product threats in water. I’ m writing this e-mail just to confirm or give me the right answer how much Rowa Carbon threats per grams in liters, because I’ve been all these years in doubt and I want to know the right answer. Please can you tell me 500g of Rowa Carbon how much salt water threat? I own a 400 liter tank. I have a second question, where does Rowa Carbon works the best in a external powerful filter ( 1800 L/H ) or in a slower filter (1000 L/H ) ? The third question is how long should you leave it working for bestperformance? The fourth question is when you change the old one that has been working for ? days, you put immediately the new one or leave it for some time and then replace it?
Thanks a lot. Excuse me for my English because it’s my second language. Whilst waiting to reply me, I appreciate a lot your co- operation and for your excellent products.