Hi all, I have a 54 ltr (14 Us Gallon) tank that I have been cycling, fishless, since late May (although only adding ammonia since 1st of June). I have sand substrate a filter on high, heater on about 82. I have one plant, a Java Fern. I used the online calculator to calculate my ammonia (household, 9.5% volume) input and dosed accordingly. I had a massive Nitrite spike which has recently subsided (a mixture of patience and water changes!) and I am now getting zero nitrites and ammonia 36 hours after dosing 2.0ppm of ammonia - is that sufficiently cycled and ready for fish, considering my tank size? As an aside, I have to admit I was initially dosing much higher amounts (I'd guess about 5 ppm) but have recently reduced it to 2ppm (I think I was being dumb - on the online calculator you have to put you tank volume in litres - mine is 54 - however i'm guessing that volume is when the water is full to the top - mine isn't - and if it hasn't got ornaments in taking up space - mine has - so I think I may have been overdosing initially based on this calculation? Anyway, am I now in a position to add a few fish...? I hope I have given you enough information! Thanks for your help, this is an amazingly helpful resource. Oh, additionally my nitrates are 80 which I would hope to reduce with a big water change. Ph is 7.5. Thanks.