Solidus1833 Posted March 1, 2021 Share Posted March 1, 2021 (edited) So, on a positive note, I did not lose a single fish from either my 20g or 72g. However right now I'm dealing with some massive nitrate levels. Let me give some details. My house went nearly 1 week without consistent power. Between 7 days I only received around half an hour of electricity on two different occasions. So I essentially put my backup heater in my big tank wrapped both tanks with insulating blankets, gave a salute and hoped for the best. So needless to say it worked, the temps didn't drop below 68F which is 10F below where it is kept. The house was at 48F at the lowest point. The 72g has a Fluval fx4 with Biohome media and two types of sponge, coarse/fine. I've never had an imbalance like this before. After spending all of last week cleaning the Fx4 and doing 25% water changes a day and 50% on Friday yet I saw zero change in nitrate levels. So I went to my lfs for some advice and they told me to get some Biochem-Zorb and place it in my Fx4. So I placed the BC-Zorb in my bottom tray after all the biohome yesterday afternoon. I expect to run it for atleast a week before I either add another pouch or try something else besides weekly 25% water changes. So essentially Im asking for some advice here to see if anyone else has had this problem. I suppose what I'm going through is 'old tank syndrome'. Was one pouch of BC-Zorb enough? I'm beginning to think I may have needed to buy two pouches. The tank is planted so I never get any ammonia readings. Nitrites are 0, and all the other parameters are normal just the Nitrates are through the roof. One other thing to mention is when I opened up my Fx4 on Wednesday to service it. My fine sponge is normally blue yet now its red. I think this means my Biohome is deteriorating? Could this be a cause of my nitrate spikes? This tank was in a such good cycle I could go 3 weeks with no water change before I would see nitrates go above 40ppm. Bonus pic of Ricky (royal) and Leo (Para) pleco's monchin, and a picture of the full tank taken this morning. Edited March 1, 2021 by Solidus1833 Spelling, adding pics Link to comment Share on other sites More sharing options...
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