Re: Method for water change with EI
I hard plumb a system from the tap into the tank(with both Cold and Hot valves) and a hard plumbed drain.
This is mainly for larger tanks or frequent water change needs, I use a simple DIY python with a refill like Tom Wood's.
You are not obligated to do weekly water changes with EI.
More volume and frequency will hit the target better, but if the tank is doing well, you can extend things 2-3 weeks fairly easily.
If things look funny, do a 50% weekly routine till it clears up, then back off if you want. The trade is present, but heck, everyone gets busy once a week and neglects.
EI is simply estimating based on a rate. If plants look good, keep going.
Large siphons or pumps can be used to drain, I've always used plain old tap directly into the tank and toss in Amquel and Macro's.
Run the tap line through a carbon filter if you want also to not need any Dechlorinator
Regards,
Tom Barr