The Puffer Forum

100l full marine, I do 30L bi-weekly water changes at the moment as no LR and 2ppm ammonia.
In the UK.
Very hard tap water.

Any ideas?

Hoping to upgrade to FOWLR soon but in the meanwhile I want to get used to using a RO/DI first as I don't want algae outbreaks due to bad source water.

I use a spectra pure ro/do water filter.

Find a local reef club near you. I got a used one for $50! Many folks sell used ones & then you only need the filter material. That, I'd get from: www.bulkreefsupply.com. You can also check Ebay.