Hello TPT ,
I have kept fresh water tanks for years, honestly never much past basic though, I have kept low tech planted tanks in the past. I read threw your post and often find myself overwhelmed in the technical / mathematical aspect a lot of you bring to the table.
I recently moved and and in the process of setting up my 90 gallon tank again and decided to make some significant upgrades as my Christmas present this year.
I am though having a couple of issues.
1) the tap water here is complete and total trash !! usually in under two days it will turn horrible shades of green and starts off right out of the tap discolored as it is.
This is not actually the problem ...
as part of the upgrades I installed a direct water line and drain behind the tank. (NO MORE BUCKETS FOR ME
) with the water being such and issue I added a RO/DI unit under the tank. I also added a Coralife 12X 36w Turbo Twist UV Sterilizer. I know that unit is a bit of over kill for a 90g tank but I am thinking about going to a larger tank in the future so as i build i have been building with that in mind.
I also upgraded my filtration to a Fluval Fx6 Canister Filter.
and added a pressurized CO2 system.
and ordered a BML Dutch Planted 6300K - XB Series light
OK now i feel more like i am bragging but honestly just trying to describe the system...
As I stated before i know the basics ... I have used RO/DI water before ... but before i was making the water into a drum and pumping it into buckets when i needed it and then into the tank. so it had time to sit and re-oxygenate and i never had a problem I never added and other chems to the water other than basics ferts and i had a low tech sugar and yeast system providing some co2 and was always very happy with my tank.
Now i am set up to drip the ro/di water directly in to the tank at a rate of between 3-4 gph at that rate there is not temperature spikes as I also upgraded the heater to :
JBJ 1000-watt True Temp Titanium Heating System
with the slow drip it can keep the temp stable with no problem
I have been reading though, that adding ro/di water directly to the tank can cause oxygen issues even potentially killing my fish or so said some of the post i read.
I was wondering if I had the co2 shut off during these water changes and added a bubble stone just during the refill process if that would add enough O2 to the tank as to not stress the fish out or kill them and once the tank had refilled turn the O2 off and the CO2 back on if that would be sufficient.
actually I think i will stop with just this question today
also I normally use little to no additives or chemicals other then basic ferts I began set up about 3 months ago and did the slow patient process of cycling the tank with small water changes every couple of days until the water was right. I don't use quick start additives etc.
Thanks to the community for your input in advance. I look forward to your help.