TABLE 5.

Electrical conductivity (EC) and pH of feed and drain nutrient solutions.

Treatment	Feed EC (mS cm–1)	Drain EC (mS cm–1)	Feed pH	Drain pH
1	1.5	1.1	5.6	6.5
2	2.4	2.3	5.6	5.6
3	1.5	1.2	5.6	6.2
4	2.5	2.2	5.6	5.6
5	2.1	2.0	5.6	6.5
6	2.5	2.5	5.6	5.9
7	2.1	1.9	5.6	6.2
8	2.5	2.2	5.6	6.1
9	1.8	1.8	5.6	6.5
10	2.8	2.8	5.6	5.6
11	2.0	1.9	5.6	6.6
12	2.1	2.0	5.6	5.6
13	1.8	1.6	5.6	5.3
14	2.3	2.4	5.6	6.4
15	1.9	1.9	5.6	5.9
16	1.9	1.8	5.6	6.0
17	1.9	1.8	5.6	5.6
18	1.9	1.8	5.6	6.1
19	1.9	1.8	5.6	5.9
20	1.9	1.9	5.6	5.9